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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of the Sonata Project package.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (c) Thomas Rabaix <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Sonata\SeoBundle\Block\Social;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use GuzzleHttp\Exception\GuzzleException;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Http\Client\ClientExceptionInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Http\Client\ClientInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Http\Message\RequestFactoryInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sonata\AdminBundle\Form\FormMapper;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sonata\BlockBundle\Block\BlockContextInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sonata\BlockBundle\Model\BlockInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sonata\CoreBundle\Form\Type\ImmutableArrayType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sonata\CoreBundle\Model\Metadata;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Form\Extension\Core\Type\CheckboxType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Form\Extension\Core\Type\ChoiceType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Form\Extension\Core\Type\IntegerType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Form\Extension\Core\Type\TextareaType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Form\Extension\Core\Type\TextType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\HttpFoundation\Response;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\OptionsResolver\OptionsResolver;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This block service allows to embed a tweet by requesting the Twitter API.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @see https://dev.twitter.com/docs/api/1/get/statuses/oembed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Hugo Briand <[email protected]>  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                class TwitterEmbedTweetBlockService extends BaseTwitterButtonBlockService  | 
            
            
                                                                        
                            
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public const TWITTER_OEMBED_URI = 'https://api.twitter.com/1/statuses/oembed.json';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public const TWEET_URL_PATTERN = '%^(https://)(www.)?(twitter.com/)(.*)(/status)(es)?(/)([0-9]*)$%i';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public const TWEET_ID_PATTERN = '%^([0-9]*)$%';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @var ClientInterface|null  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    private $httpClient;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @var RequestFactoryInterface|null  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    private $messageFactory;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function __construct(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ?string $name,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        EngineInterface $templating,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ClientInterface $httpClient = null,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        RequestFactoryInterface $messageFactory = null  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    ) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        parent::__construct($name, $templating);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->httpClient = $httpClient;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->messageFactory = $messageFactory;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function execute(BlockContextInterface $blockContext, Response $response = null)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $this->renderResponse($blockContext->getTemplate(), [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'block' => $blockContext->getBlock(),  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'tweet' => $this->loadTweet($blockContext),  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ], $response);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function configureSettings(OptionsResolver $resolver)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $resolver->setDefaults([  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'template' => '@SonataSeo/Block/block_twitter_embed.html.twig',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'tweet' => '',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'maxwidth' => null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'hide_media' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'hide_thread' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'omit_script' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'align' => 'none',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'related' => null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'lang' => null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ]);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function buildEditForm(FormMapper $form, BlockInterface $block)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $form->add('settings', ImmutableArrayType::class, [ | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'keys' => [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ['tweet', TextareaType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'required' => true,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'label' => 'form.label_tweet',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'sonata_help' => 'form.help_tweet',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ['maxwidth', IntegerType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'required' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'label' => 'form.label_maxwidth',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'sonata_help' => 'form.help_maxwidth',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ['hide_media', CheckboxType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'required' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'label' => 'form.label_hide_media',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'sonata_help' => 'form.help_hide_media',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ['hide_thread', CheckboxType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'required' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'label' => 'form.label_hide_thread',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'sonata_help' => 'form.help_hide_thread',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    121
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                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ['omit_script', CheckboxType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'required' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'label' => 'form.label_omit_script',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'sonata_help' => 'form.help_omit_script',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    126
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                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ['align', ChoiceType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'required' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    129
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                                    'choices' => [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        'left' => 'form.label_align_left',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        'right' => 'form.label_align_right',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                        'center' => 'form.label_align_center',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                                     | 
                
                 | 
                                        'none' => 'form.label_align_none',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                                    ],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                                    'label' => 'form.label_align',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                                ['related', TextType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                                    'required' => false,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                                    'label' => 'form.label_related',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                                    'sonata_help' => 'form.help_related',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                                ['lang', ChoiceType::class, [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                                    'required' => true,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                                    'choices' => $this->languageList,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                                    'label' => 'form.label_lang',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                                ]],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                            ],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                            'translation_domain' => 'SonataSeoBundle',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                        ]);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                     * {@inheritdoc} | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                    public function getBlockMetadata($code = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                        return new Metadata($this->getName(), (null !== $code ? $code : $this->getName()), false, 'SonataSeoBundle', [  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                                                                        
                        
                         
                                                                                        
                                                                                            
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                            'class' => 'fa fa-twitter',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                        ]);  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                     * Returns supported API parameters from settings.  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                     * @return array  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                    protected function getSupportedApiParams()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                                                     | 
                
                 | 
                        return [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
                 | 
                                    
                                                     | 
                
                 | 
                            'maxwidth',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
                                                     | 
                
                 | 
                            'hide_media',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                            'hide_thread',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                            'omit_script',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    174
                 | 
                                    
                                                     | 
                
                 | 
                            'align',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    175
                 | 
                                    
                                                     | 
                
                 | 
                            'related',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    176
                 | 
                                    
                                                     | 
                
                 | 
                            'lang',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    177
                 | 
                                    
                                                     | 
                
                 | 
                            'url',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    178
                 | 
                                    
                                                     | 
                
                 | 
                            'id',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    179
                 | 
                                    
                                                     | 
                
                 | 
                        ];  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    180
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                        
                                                                
            
                                    
            
            
                | 
                    181
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                                                                
            
                                    
            
            
                | 
                    182
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    183
                 | 
                                    
                                                     | 
                
                 | 
                     * Builds the API query URI based on $settings.  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    184
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    185
                 | 
                                    
                                                     | 
                
                 | 
                     * @param bool $uriMatched  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    186
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    187
                 | 
                                    
                                                     | 
                
                 | 
                     * @return string  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    188
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    189
                 | 
                                    
                                                     | 
                
                 | 
                    protected function buildUri($uriMatched, array $settings)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    190
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    191
                 | 
                                    
                                                     | 
                
                 | 
                        $apiParams = $settings;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    192
                 | 
                                    
                                                     | 
                
                 | 
                        $supportedParams = $this->getSupportedApiParams();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    193
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    194
                 | 
                                    
                                                     | 
                
                 | 
                        if ($uriMatched) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    195
                 | 
                                    
                                                     | 
                
                 | 
                            // We matched the uri  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    196
                 | 
                                    
                                                     | 
                
                 | 
                            $apiParams['url'] = $settings['tweet'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    197
                 | 
                                    
                                                     | 
                
                 | 
                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    198
                 | 
                                    
                                                     | 
                
                 | 
                            $apiParams['id'] = $settings['tweet'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    199
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    200
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    201
                 | 
                                    
                                                     | 
                
                 | 
                        unset($apiParams['tweet']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    202
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    203
                 | 
                                    
                                                     | 
                
                 | 
                        $parameters = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    204
                 | 
                                    
                                                     | 
                
                 | 
                        foreach ($apiParams as $key => $value) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    205
                 | 
                                    
                                                     | 
                
                 | 
                            if ($value && \in_array($key, $supportedParams, true)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    206
                 | 
                                    
                                                     | 
                
                 | 
                                $parameters[] = $key.'='.$value;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    207
                 | 
                                    
                                                     | 
                
                 | 
                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    208
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    209
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    210
                 | 
                                    
                                                     | 
                
                 | 
                        return sprintf('%s?%s', self::TWITTER_OEMBED_URI, implode('&', $parameters)); | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    211
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    212
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    213
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    214
                 | 
                                    
                                                     | 
                
                 | 
                     * Loads twitter tweet.  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    215
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    216
                 | 
                                    
                                                     | 
                
                 | 
                    private function loadTweet(BlockContextInterface $blockContext): ?string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    217
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    218
                 | 
                                    
                                                     | 
                
                 | 
                        $uriMatched = preg_match(self::TWEET_URL_PATTERN, $blockContext->getSetting('tweet')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    219
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    220
                 | 
                                    
                                                     | 
                
                 | 
                        if (!$uriMatched || !preg_match(self::TWEET_ID_PATTERN, $blockContext->getSetting('tweet'))) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    221
                 | 
                                    
                                                     | 
                
                 | 
                            return null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    222
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    223
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    224
                 | 
                                    
                                                     | 
                
                 | 
                        if (null !== $this->httpClient && null !== $this->messageFactory) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    225
                 | 
                                    
                                                     | 
                
                 | 
                            try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    226
                 | 
                                    
                                                     | 
                
                 | 
                                $response = $this->httpClient->sendRequest(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    227
                 | 
                                    
                                                     | 
                
                 | 
                                    $this->messageFactory->createRequest(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    228
                 | 
                                    
                                                     | 
                
                 | 
                                        'GET',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    229
                 | 
                                    
                                                     | 
                
                 | 
                                        $this->buildUri($uriMatched, $blockContext->getSettings())  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    230
                 | 
                                    
                                                     | 
                
                 | 
                                    )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    231
                 | 
                                    
                                                     | 
                
                 | 
                                );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    232
                 | 
                                    
                                                     | 
                
                 | 
                            } catch (ClientExceptionInterface $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    233
                 | 
                                    
                                                     | 
                
                 | 
                                // log error  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    234
                 | 
                                    
                                                     | 
                
                 | 
                                return null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    235
                 | 
                                    
                                                     | 
                
                 | 
                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    236
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    237
                 | 
                                    
                                                     | 
                
                 | 
                            $apiTweet = json_decode($response->getBody(), true);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    238
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    239
                 | 
                                    
                                                     | 
                
                 | 
                            return $apiTweet['html'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    240
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    241
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    242
                 | 
                                    
                                                     | 
                
                 | 
                        // NEXT_MAJOR: Remove the old guzzle implementation  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    243
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    244
                 | 
                                    
                                                     | 
                
                 | 
                        // We matched an URL or an ID, we'll need to ask the API  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    245
                 | 
                                    
                                                     | 
                
                 | 
                        if (false === class_exists('GuzzleHttp\Client')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    246
                 | 
                                    
                                                     | 
                
                 | 
                            throw new \RuntimeException(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    247
                 | 
                                    
                                                     | 
                
                 | 
                                'The guzzle http client library is required to call the Twitter API.'.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    248
                 | 
                                    
                                                     | 
                
                 | 
                                'Make sure to add psr/http-client or guzzlehttp/guzzle to your composer.json.'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    249
                 | 
                                    
                                                     | 
                
                 | 
                            );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    250
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    251
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    252
                 | 
                                    
                                                     | 
                
                 | 
                        @trigger_error(  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    253
                 | 
                                    
                                                     | 
                
                 | 
                            'The direct Guzzle implementation is deprecated since 2.x and will be removed with the next major release.',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    254
                 | 
                                    
                                                     | 
                
                 | 
                            E_USER_DEPRECATED  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    255
                 | 
                                    
                                                     | 
                
                 | 
                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    256
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    257
                 | 
                                    
                                                     | 
                
                 | 
                        // TODO cache API result  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    258
                 | 
                                    
                                                     | 
                
                 | 
                        $client = new \GuzzleHttp\Client();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    259
                 | 
                                    
                                                     | 
                
                 | 
                        $client->setConfig(['curl.options' => [CURLOPT_CONNECTTIMEOUT_MS => 1000]]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    260
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    261
                 | 
                                    
                                                     | 
                
                 | 
                        try { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    262
                 | 
                                    
                                                     | 
                
                 | 
                            $request = $client->get($this->buildUri($uriMatched, $blockContext->getSettings()));  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    263
                 | 
                                    
                                                     | 
                
                 | 
                            $apiTweet = json_decode($request->send()->getBody(true), true);  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    264
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    265
                 | 
                                    
                                                     | 
                
                 | 
                            return $apiTweet['html'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    266
                 | 
                                    
                                                     | 
                
                 | 
                        } catch (GuzzleException $e) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    267
                 | 
                                    
                                                     | 
                
                 | 
                            // log error  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    268
                 | 
                                    
                                                     | 
                
                 | 
                            return null;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    269
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    270
                 | 
                                    
                                                     | 
                
                 | 
                        // END NEXT_MAJOR  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    271
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    272
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    273
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.