<?PHP
/*
* x0Cache engine
* Version 0.1.0
* Copyright (c) 2012 F3llony, roberts@x0.lv
* Website: http://cache.x0.lv/
* Licensed under the terms of
* GNU GENERAL PUBLIC LICENSE Version 3
*
* APC caching engine for x0Cache.
*/
class apc extends x0cache
{
public $config;
public function __construct($config)
{
if (extension_loaded('apc') == false)
{
throw new Exception('x0Cache: APC engine is loaded but APC extension is not present. Code: 1005', 1005);
}
if ($config->apc->encrypt == true)
{
if ($config->canEncrypt == false)
{
throw new Exception('x0Cache: APC value encryption is enabled but Mcrypt extension is not available. Code: 5002', 5002);
}
elseif (empty($config->apc->encryptionKey))
{
throw new Exception('x0Cache: APC value encryption is enabled but no encryption key is set. Code: 5003', 5003);
}
}
$this->config = $config;
}
public function get($name)
{
$value = apc_fetch($this->config->namePrefix . $name, $success);
if ($success == true)
{
if (substr($value, 0, 7) == 'x0cser:')
{
$value = unserialize(substr($value, 7));
}
elseif ($this->config->apc->encrypt == true)
{
$value = parent::decrypt($this->config->apc->encryptionKey, $value, $this->config->encryptionAlgo);
}
return $value;
}
else
{
return false;
}
}
public function set($key, $value, $ttl = 0)
{
if ($this->config->apc->encrypt == false)
{
if (is_object($value) || is_array($value))
{
$value = 'x0cser:' . serialize($value);
}
return apc_store($this->config->namePrefix . $key, $value, $ttl);
}
else
{
$sval = parent::encrypt($this->config->apc->encryptionKey, $value, $this->config->encryptionAlgo);
return apc_store($this->config->namePrefix . $key, $sval, $ttl);
}
}
public function delete($key)
{
return apc_delete($this->config->namePrefix . $key);
}
public function exists($key)
{
return apc_exists($this->config->namePrefix . $key);
}
public function flush()
{
$results = new APCIterator('user', '/(' . $this->config->namePrefix . ')+.*/i', APC_ITER_KEY);
foreach ($results as $item)
{
apc_delete($item['key']);
}
return count($results);
}
}
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