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<?php |
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namespace Azine\SocialBarBundle\Templating; |
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use Symfony\Component\DependencyInjection\ContainerInterface; |
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class SocialBarTwigExtension extends \Twig_Extension |
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{ |
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protected $container; |
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/** |
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* Constructor. |
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* |
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* @param ContainerInterface $container |
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*/ |
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public function __construct(ContainerInterface $container) |
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{ |
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$this->container = $container; |
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} |
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public function getName() |
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{ |
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return 'azine_social_bar'; |
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} |
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public function getFunctions() |
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{ |
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$functions['socialButtons' ] = new \Twig_SimpleFunction('socialButtons' , array($this,'getSocialButtons'), array('is_safe' => array('html'))); |
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$functions['facebookButton' ] = new \Twig_SimpleFunction('facebookButton' , array($this,'getFacebookButton'), array('is_safe' => array('html'))); |
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$functions['twitterButton' ] = new \Twig_SimpleFunction('twitterButton' , array($this,'getTwitterButton'), array('is_safe' => array('html'))); |
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$functions['googlePlusButton'] = new \Twig_SimpleFunction('googlePlusButton', array($this,'getGooglePlusButton'), array('is_safe' => array('html'))); |
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$functions['xingButton' ] = new \Twig_SimpleFunction('xingButton' , array($this,'getXingButton'), array('is_safe' => array('html'))); |
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$functions['linkedInButton' ] = new \Twig_SimpleFunction('linkedInButton' , array($this,'getLinkedInButton'), array('is_safe' => array('html'))); |
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return $functions; |
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} |
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/** |
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* Get all the buttons in one row |
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* @param array $parameters |
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* @param string $action |
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*/ |
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public function getSocialButtons(array $parameters = array(), $action = "share") |
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{ |
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$commonParams = $parameters; |
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$render_parameters = array(); |
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if(array_key_exists('facebook', $commonParams)) unset($commonParams['facebook']); |
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if(array_key_exists('twitter', $commonParams)) unset($commonParams['twitter']); |
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if(array_key_exists('googleplus', $commonParams)) unset($commonParams['googleplus']); |
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if(array_key_exists('xing', $commonParams)) unset($commonParams['xing']); |
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if(array_key_exists('linkedin', $commonParams)) unset($commonParams['linkedin']); |
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// no parameters were defined, keeps default values |
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View Code Duplication |
if (!array_key_exists('facebook', $parameters)) { |
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$render_parameters['facebook'] = $parameters; |
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// parameters are defined, overrides default values |
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} elseif (is_array($parameters['facebook'])) { |
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$render_parameters['facebook'] = array_merge($commonParams, $parameters['facebook']); |
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// the button is not displayed |
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} else { |
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$render_parameters['facebook'] = false; |
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} |
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View Code Duplication |
if (!array_key_exists('twitter', $parameters)) { |
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$render_parameters['twitter'] = $parameters; |
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} elseif (is_array($parameters['twitter'])) { |
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$render_parameters['twitter'] = array_merge($commonParams, $parameters['twitter']); |
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} else { |
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$render_parameters['twitter'] = false; |
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} |
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View Code Duplication |
if (!array_key_exists('googleplus', $parameters)) { |
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$render_parameters['googleplus'] = $parameters; |
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} elseif (is_array($parameters['googleplus'])) { |
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$render_parameters['googleplus'] = array_merge($commonParams, $parameters['googleplus']); |
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} else { |
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$render_parameters['googleplus'] = false; |
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} |
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View Code Duplication |
if (!array_key_exists('xing', $parameters)) { |
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$render_parameters['xing'] = $parameters; |
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} elseif (is_array($parameters['xing'])) { |
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$render_parameters['xing'] = array_merge($commonParams, $parameters['xing']); |
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} else { |
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$render_parameters['xing'] = false; |
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} |
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if (!array_key_exists('linkedin', $parameters)) { |
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$render_parameters['linkedin'] = $parameters; |
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} elseif (is_array($parameters['linkedin'])) { |
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$render_parameters['linkedin'] = array_merge($commonParams, $parameters['linkedin']); |
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} else { |
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$render_parameters['linkedin'] = false; |
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} |
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$render_parameters['action'] = $action; |
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$render_parameters['width'] = 130; |
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$render_parameters['height'] = 20; |
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// get the helper service and display the template |
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return $this->container->get('azine.socialBarHelper')->socialButtons($render_parameters); |
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} |
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/** |
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* Render the html for the facebook like button |
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* => https://developers.facebook.com/docs/reference/plugins/like/ |
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* @param array $parameters |
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*/ |
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public function getFacebookButton($parameters = array(), $action = "share") |
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{ |
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// default values, you can override the values by setting them |
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$parameters = $parameters + array( |
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'locale' => 'en_US', |
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'send' => false, |
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'width' => 130, |
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'showFaces' => false, |
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'layout' => 'button_count', |
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); |
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View Code Duplication |
if ($action == "share") { |
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$parameters['url'] = array_key_exists('url', $parameters) ? $parameters['url'] : null; |
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$parameters['action'] = 'fb-like'; |
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} elseif ($action == "follow") { |
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$parameters['url'] = $this->container->getParameter("azine_social_bar_fb_profile_url"); |
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$parameters['action'] = "fb-follow"; |
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} else { |
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throw new \Exception("Unknown social action. Only 'share' and 'follow' are known at the moment."); |
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} |
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return $this->container->get('azine.socialBarHelper')->facebookButton($parameters); |
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} |
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/** |
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* Render the html for the twitter button |
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* => |
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* @param array $parameters |
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*/ |
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public function getTwitterButton($parameters = array(), $action = "share") |
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{ |
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$parameters = $parameters + array( |
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'url' => array_key_exists('url', $parameters) ? $parameters['url'] : null, |
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'locale' => 'en', |
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'message' => 'I want to share that page with you', |
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'text' => 'Tweet', |
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'via' => $this->container->getParameter("azine_social_bar_twitter_username"), |
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'tag' => array_key_exists('tag', $parameters) ? $parameters['tag'] : $this->container->getParameter("azine_social_bar_twitter_username"), |
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); |
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if ($action == "share") { |
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$parameters['actionClass'] = "twitter-share-button"; |
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$parameters['action'] = "share"; |
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} elseif ($action == "follow") { |
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$parameters['actionClass'] = "twitter-follow-button"; |
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$parameters['action'] = $this->container->getParameter("azine_social_bar_twitter_username"); |
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} else { |
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throw new \Exception("Unknown social action. Only 'share' and 'follow' are known at the moment."); |
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} |
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return $this->container->get('azine.socialBarHelper')->twitterButton($parameters); |
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} |
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/** |
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* Render the html for the Google+ button |
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* => |
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* @param array $parameters |
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*/ |
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public function getGooglePlusButton($parameters = array(), $action = "share") |
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{ |
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$parameters = $parameters + array( |
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'locale' => 'en', |
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'size' => 'medium', |
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'annotation' => 'bubble', |
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'width' => 130, |
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'height' => 20, |
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); |
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if ($action == "share") { |
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$parameters['url'] = array_key_exists('url', $parameters) ? $parameters['url'] : null; |
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$parameters['rel'] = 'author'; |
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$parameters['action'] = 'g-plusone'; |
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} elseif ($action == "follow") { |
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$parameters['url'] = $this->container->getParameter("azine_social_bar_google_plus_profile_url"); |
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$parameters['rel'] = "publisher"; |
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$parameters['action'] = "g-follow"; |
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} else { |
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throw new \Exception("Unknown social action. Only 'share' and 'follow' are known at the moment."); |
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} |
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return $this->container->get('azine.socialBarHelper')->googlePlusButton($parameters); |
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} |
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public function getLinkedInButton($parameters = array(), $action = "share") |
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{ |
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$parameters = $parameters + array( |
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'locale' => 'en', |
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'counterLocation' => 'right', |
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); |
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View Code Duplication |
if ($action == "share") { |
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$parameters['action'] = 'IN/Share'; |
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$parameters['url'] = array_key_exists('url', $parameters) ? $parameters['url'] : null; |
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} elseif ($action == "follow") { |
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$parameters['action'] = 'IN/FollowCompany'; |
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$parameters['companyId'] = $this->container->getParameter("azine_social_bar_linked_in_company_id"); |
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} else { |
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throw new \Exception("Unknown social action. Only 'share' and 'follow' are known at the moment."); |
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} |
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return $this->container->get('azine.socialBarHelper')->linkedInButton($parameters); |
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} |
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public function getXingButton($parameters = array(), $action = "share") |
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{ |
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$parameters = $parameters + array( |
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'locale' => 'en', |
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'action' => 'XING/Share', |
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'counterLocation' => 'right', |
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); |
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if ($action == "share") { |
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$parameters['url'] = array_key_exists('url', $parameters) ? $parameters['url'] : null; |
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} elseif ($action == "follow") { |
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$parameters['url'] = $this->container->getParameter("azine_social_bar_xing_profile_url"); |
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} else { |
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throw new \Exception("Unknown social action. Only 'share' and 'follow' are known at the moment."); |
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} |
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return $this->container->get('azine.socialBarHelper')->xingButton($parameters); |
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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.