web/private_php/ams/plugins/cacheresource.apc.php

   1 <?php
   2
   3 /**
   4  * APC CacheResource
   5  *
   6  * CacheResource Implementation based on the KeyValueStore API to use
   7  * memcache as the storage resource for Smarty's output caching.
   8  * *
   9  * @package CacheResource-examples
  10  * @author Uwe Tews
  11  */
  12 class Smarty_CacheResource_Apc extends Smarty_CacheResource_KeyValueStore {
  13
  14     public function __construct()
  15     {
  16         // test if APC is present
  17         if(!function_exists('apc_cache_info')) {
  18             throw new Exception('APC Template Caching Error: APC is not installed');
  19         }
  20     }
  21
  22     /**
  23      * Read values for a set of keys from cache
  24      *
  25      * @param array $keys list of keys to fetch
  26      * @return array list of values with the given keys used as indexes
  27      * @return boolean true on success, false on failure
  28      */
  29     protected function read(array $keys)
  30     {
  31         $_res = array();
  32         $res = apc_fetch($keys);
  33         foreach ($res as $k => $v) {
  34             $_res[$k] = $v;
  35         }
  36         return $_res;
  37     }
  38
  39     /**
  40      * Save values for a set of keys to cache
  41      *
  42      * @param array $keys list of values to save
  43      * @param int $expire expiration time
  44      * @return boolean true on success, false on failure
  45      */
  46     protected function write(array $keys, $expire=null)
  47     {
  48         foreach ($keys as $k => $v) {
  49             apc_store($k, $v, $expire);
  50         }
  51         return true;
  52     }
  53
  54     /**
  55      * Remove values from cache
  56      *
  57      * @param array $keys list of keys to delete
  58      * @return boolean true on success, false on failure
  59      */
  60     protected function delete(array $keys)
  61     {
  62         foreach ($keys as $k) {
  63             apc_delete($k);
  64         }
  65         return true;
  66     }
  67
  68     /**
  69      * Remove *all* values from cache
  70      *
  71      * @return boolean true on success, false on failure
  72      */
  73     protected function purge()
  74     {
  75         return apc_clear_cache('user');
  76     }
  77 }