Zend Medianova CDN Integration

Zend is an open-source, object-oriented PHP web application framework. A Zend plug-in makes CDN integration easy.

The following steps describe the integration between Medianova CDN and Zend.

1. First of all, create a zone for your account
2. To create links pointing to the Medianova CDN URL, create the Zend plug-in below     **Change the your-cdn-url.com with your CDN URL

   class MnCDN_Plugin extends Zend_Controller_Plugin_Abstract {
       public function preDispatch(Zend_Controller_Request_Abstract $request) {
           // enable CDN links for development env
           $enable_cdn_dev = (bool) true;
           // MnCDN URL or Zone Alias
           $cdn_hostname = 'your-cdn-url.com';
   
           if ((APPLICATION_ENV == 'production') || $enable_cdn_dev)) {
               // SSL or not
               if ($request->isSecure()) {
                   Zend_Registry::set('cdn_protocol', 'https');
               } else {
                   Zend_Registry::set('cdn_protocol', 'http');
               }
           Zend_Registry::set('cdn_on', true);
           Zend_Registry::set('cdn_hostname', $cdn_hostname);
           } else {
               Zend_Registry::set('cdn_on', false);
           }
           return true;
       }
   }
   

3. Create Zend view helper

   class MnCDN_Helper extends Zend_View_Helper_Abstract {
       public function cdn($url) {
           if (empty($url))
               throw new Exception('Path is missing');
   
           $pattern = '/^http/i';
           if (preg_match($pattern, $url)) {
               throw new Exception('Invalid usage. ' .
                   'Use: /htdocs/images instead of the full URL ' .
                   'http://your-website.com/htdocs/images.'
               );
           }
   
           $pattern = '|^/|';
           if (!preg_match($pattern, $url)) {
               $url = '/' . $url;
           }
   
           if (!Zend_Registry::get('cdn_on')) {
               return $url;
           } else {
               $cdn_hostname = Zend_Registry::get('cdn_hostname');
               $cdn_protocol = Zend_Registry::get('cdn_protocol');
               $uri = $cdn_protocol . '://' . $cdn_hostname . $url;
   
               return $uri;
           }
       }
   }
   

4. Use the CDN helper in the view

   <img alt="Medianova CDN" src="<?php echo $this->cdn('//img-docsmedianova.mncdn.com/htdocs/images/medianova-logo.jpeg'); ?>" />

5. Verify whether links with HTML source code show the CDN URL