Added possibility to use sfAPCCache without APC (same as sfNoCache)

Author: jeromemacias

lib/cache/sfAPCCache.class.php

@@ -3,7 +3,7 @@
 /*
  * This file is part of the symfony package.
  * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
- * 
+ *
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
@@ -18,6 +18,8 @@
  */
 class sfAPCCache extends sfCache
 {
+  protected $enabled;
+
   /**
    * Initializes this sfCache instance.
    *
@@ -31,18 +33,21 @@ public function initialize($options = array())
   {
     parent::initialize($options);
 
-    if (!function_exists('apc_store') || !ini_get('apc.enabled'))
-    {
-      throw new sfInitializationException('You must have APC installed and enabled to use sfAPCCache class.');
-    }
+    $this->enabled = function_exists('apc_store') && ini_get('apc.enabled');
   }
 
  /**
   * @see sfCache
   */
   public function get($key, $default = null)
   {
+    if (!$this->enabled)
+    {
+      return $default;
+    }
+
     $value = $this->fetch($this->getOption('prefix').$key, $has);
+
     return $has ? $value : $default;
   }
 
@@ -51,7 +56,13 @@ public function get($key, $default = null)
    */
   public function has($key)
   {
+    if (!$this->enabled)
+    {
+      return false;
+    }
+
     $this->fetch($this->getOption('prefix').$key, $has);
+
     return $has;
   }
 
@@ -68,15 +79,21 @@ private function fetch($key, &$success)
     {
       $success = $value !== false;
     }
+
     return $value;
   }
-  
-  
+
+
   /**
    * @see sfCache
    */
   public function set($key, $data, $lifetime = null)
   {
+    if (!$this->enabled)
+    {
+      return true;
+    }
+
     return apc_store($this->getOption('prefix').$key, $data, $this->getLifetime($lifetime));
   }
 
@@ -85,6 +102,11 @@ public function set($key, $data, $lifetime = null)
    */
   public function remove($key)
   {
+    if (!$this->enabled)
+    {
+      return true;
+    }
+
     return apc_delete($this->getOption('prefix').$key);
   }
 
@@ -93,6 +115,11 @@ public function remove($key)
    */
   public function clean($mode = sfCache::ALL)
   {
+    if (!$this->enabled)
+    {
+      return true;
+    }
+
     if (sfCache::ALL === $mode)
     {
       return apc_clear_cache('user');
@@ -130,6 +157,11 @@ public function getTimeout($key)
    */
   public function removePattern($pattern)
   {
+    if (!$this->enabled)
+    {
+      return true;
+    }
+
     $infos = apc_cache_info('user');
     if (!is_array($infos['cache_list']))
     {
@@ -147,8 +179,20 @@ public function removePattern($pattern)
     }
   }
 
+  /**
+   * Gets the cache info
+   *
+   * @param  string $key The cache key
+   *
+   * @return string
+   */
   protected function getCacheInfo($key)
   {
+    if (!$this->enabled)
+    {
+      return false;
+    }
+
     $infos = apc_cache_info('user');
 
     if (is_array($infos['cache_list']))