Alpha Wordpress Plugin for Delicious with Zend Framework’s Zend_Service_Delicious

July 20th, 2007 by Rich Zygler
tags: PHP, Wordpress, Zend Framework, del.icio.us |

I have Wordpress set up on PHP5. While Wordpress is largely a PHP4 entity, I wanted to see if it could play nicely with the Zend Framework, which is a PHP5-only entity. With some careful fiddling, it works pretty well.

With my Zend Framework code set up in my PHP include path, the first thing I needed to do to create a Wordpress Plugin was to enable my plugin to call the Zend Framework classes. First I tried this towards the end of my wp-config.php file:

PLAIN TEXT
PHP:
  1. require_once 'Zend/Loader.php';
  2. function __autoload($class)
  3. {
  4. Zend_Loader::loadClass($class);
  5. }

This caused Wordpress to freak out like a chihuahua on speed. Not good. I figured we'd have to do something special because we don't want ALL the classes to autoload, just the Zend ones. So I scrapped my previous __autoload and tried this instead:

PLAIN TEXT
PHP:
  1. require_once 'Zend/Loader.php';
  2. function __autoload($class)
  3. {
  4. $pos = strpos($class, 'Zend');
  5. if ($pos !== false)
  6. {
  7. Zend_Loader::loadClass($class);
  8. }
  9. }

Ahh, success. Sweeter then a brownie sundae with extra chocolate sauce.

From there, the rest is easy. Here's some basic code for the rz_delicious plugin, a basic PHP file you can drop into your Wordpress Plugins dir. It uses Zend_Cache and Zend_Service_Delicious to put your del.icio.us bookmarks onto your Wordpress blog. It first checks to see if there's a cached version already, if not, it uses the del.icio.us API to fetch your latest bookmarks. It does some list formatting there too because I didn't feel like handling that in my theme.

PLAIN TEXT
PHP:
  1. <?php
  2. /*
  3. Plugin Name: RZ Delicious
  4. Plugin URI: http://www.boringuys.com/
  5. Description: YADelicious Plugin
  6. Author: Rich Zygler
  7. Version: 1.0
  8. Author URI: http://www.boringguys.com/
  9. */
  10.  
  11. /*
  12.     called from theme via:
  13.     get_rz_delicious()
  15. */
  16.  
  17. function get_rz_delicious()
  18. {
  19.     $output = '';
  20.     $username = 'username';
  21.     $password = 'password';
  22.     $tag      = 'tagname';
  23.     $numPosts      = 15;
  24.     $cacheTime     = 3600;      // seconds
  25.     $cacheDir      = '/tmp/';
  26.  
  27.     $frontendOptions = array(
  28.        'lifetime' => $cacheTime,                  // in seconds
  29.        'automatic_serialization' => false  // this is default anyway
  30.     );
  31.  
  32.     $backendOptions = array('cache_dir' => $cacheDir);
  33.  
  34.     $cache = Zend_Cache::factory('Output', 'File', $frontendOptions, $backendOptions);
  35.  
  36.     // we pass a unique identifier to the start() method
  37.     if(!$cache->start('rz_delicious'))
  38.     {
  39.         try
  40.         {
  41.             $delicious = new Zend_Service_Delicious($username, $password);
  42.             $posts = $delicious->getRecentPosts($tag,$numPosts);  //$tag
  43.  
  44.             if (count($posts)> 0)
  45.             {
  46.                 $output .= '<ul id="delicious">';
  47.             }
  48.             foreach ($posts as $post)
  49.             {
  50.                 $output .= '<li><a href="' . $post->getUrl() . '" title="' .  $post->getNotes() . '">';
  51.                 $output .= $post->getTitle() . '</a> ';
  52.  
  53.                 $strTags = '<br />( tags: ';
  54.                 foreach ($post->getTags() as $tag)
  55.                 {
  56.                    if ($tag != 'boringguys.com')
  57.                    {
  58.                         $strTags .= '<a href="http://del.icio.us/' . $username . '/' . $tag . '" title="' . $tag . '">';
  59.                        $strTags .= $tag . '</a> | ';
  60.                    }
  61.                 }
  62.                 $strTags = trim($strTags, '| ');
  63.                 $output .= $strTags . ' )</li>';
  64.  
  65.             }
  66.             if (count($posts)> 0)
  67.             {
  68.                 $output .= '</ul>';
  69.             }
  70.         }
  71.         catch (Zend_Service_Delicious_Exception $e)
  72.         {
  73.                 // largely ignore the delicious service error
  74.                 $output .= '<ul id="delicious">';
  75.                 $output .= '<li>del.icio.us service unavailable</li>';
  76.                 $output .= '';
  77.         }
  78.         echo $output;
  79.         $cache->end(); // the output is saved and sent to the browser
  80.     }
  81.  
  82. }
  83.  
  84.  
  85. ?>

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