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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Copyright (c) Nate Brunette.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Distributed under the MIT License (http://opensource.org/licenses/MIT)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Tebru\Retrofit\Subscriber;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Psr\Log\LoggerInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\EventDispatcher\EventSubscriberInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Tebru\Retrofit\Event\AfterSendEvent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Tebru\Retrofit\Event\ApiExceptionEvent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Class LogSubscriber  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Nate Brunette <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class LogSubscriber implements EventSubscriberInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var LoggerInterface  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $logger;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Constructor  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param LoggerInterface $logger  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct(LoggerInterface $logger)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->logger = $logger;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * {@inheritdoc} | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function getSubscribedEvents()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            AfterSendEvent::NAME => 'onAfterSend',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ApiExceptionEvent::NAME => 'onApiException',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Log the request and response if it exists  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param AfterSendEvent $event  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function onAfterSend(AfterSendEvent $event)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $request = $event->getRequest();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $response = $event->getResponse();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $log['request'] = [  | 
            
                            
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                            'method' => $request->getMethod(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'uri' => rawurldecode((string) $request->getUri()),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'headers' => $request->getHeaders(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'body' => (string) $request->getBody(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (null !== $response) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $log['response'] = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'statusCode' => $response->getStatusCode(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'reasonPhrase' => $response->getReasonPhrase(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'body' => (string) $response->getBody(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'headers' => $response->getHeaders(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->logger->debug('Sent Request', $log); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Log an api exception with the request  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param ApiExceptionEvent $event  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                        
            
                                    
            
            
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                    public function onApiException(ApiExceptionEvent $event)  | 
            
            
                                                        
            
                                    
            
            
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                    { | 
            
            
                                                        
            
                                    
            
            
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                        $request = $event->getRequest();  | 
            
            
                                                        
            
                                    
            
            
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                        $exception = $event->getException();  | 
            
            
                                                        
            
                                    
            
            
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                        $this->logger->error('Request Exception', [ | 
            
            
                                                        
            
                                    
            
            
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                            'request' => [  | 
            
            
                                                        
            
                                    
            
            
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                                'method' => $request->getMethod(),  | 
            
            
                                                        
            
                                    
            
            
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                                'uri' => rawurldecode((string) $request->getUri()),  | 
            
            
                                                        
            
                                    
            
            
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                                'headers' => $request->getHeaders(),  | 
            
            
                                                        
            
                                    
            
            
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                                'body' => (string) $request->getBody(),  | 
            
            
                                                        
            
                                    
            
            
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                            ],  | 
            
            
                                                        
            
                                    
            
            
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                            'exception' => $exception,  | 
            
            
                                                        
            
                                    
            
            
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                        ]);  | 
            
            
                                                        
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.