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Revision Autor Zeilennr. Zeile
148 lars 1 
<?php
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/**
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 * APC CacheResource
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 * CacheResource Implementation based on the KeyValueStore API to use
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 * memcache as the storage resource for Smarty's output caching.
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 * *
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 *
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 * @package CacheResource-examples
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 * @author  Uwe Tews
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 */
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class Smarty_CacheResource_Apc extends Smarty_CacheResource_KeyValueStore
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{
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    /**
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     * Smarty_CacheResource_Apc constructor.
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     *
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     * @throws \Exception
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     */
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    public function __construct()
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    {
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        // test if APC is present
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        if (!function_exists('apc_cache_info')) {
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            throw new Exception('APC Template Caching Error: APC is not installed');
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        }
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    }
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    /**
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     * Read values for a set of keys from cache
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     *
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     * @param array $keys list of keys to fetch
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     *
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     * @return array   list of values with the given keys used as indexes
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     * @return boolean true on success, false on failure
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     */
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    protected function read(array $keys)
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    {
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        $_res = array();
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        $res = apc_fetch($keys);
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        foreach ($res as $k => $v) {
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            $_res[ $k ] = $v;
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        }
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        return $_res;
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    }
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    /**
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     * Save values for a set of keys to cache
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     *
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     * @param array $keys   list of values to save
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     * @param int   $expire expiration time
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     *
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     * @return boolean true on success, false on failure
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     */
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    protected function write(array $keys, $expire = null)
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    {
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        foreach ($keys as $k => $v) {
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            apc_store($k, $v, $expire);
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        }
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        return true;
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    }
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    /**
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     * Remove values from cache
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     *
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     * @param array $keys list of keys to delete
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     *
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     * @return boolean true on success, false on failure
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     */
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    protected function delete(array $keys)
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    {
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        foreach ($keys as $k) {
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            apc_delete($k);
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        }
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        return true;
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    }
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    /**
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     * Remove *all* values from cache
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     *
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     * @return boolean true on success, false on failure
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     */
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    protected function purge()
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    {
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        return apc_clear_cache('user');
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    }
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}