mirror of
https://github.com/YunoHost-Apps/limesurvey_ynh.git
synced 2024-09-03 19:36:32 +02:00
103 lines
3.4 KiB
PHP
103 lines
3.4 KiB
PHP
<?php
|
|
/**
|
|
* CXCache class file
|
|
*
|
|
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
|
|
* @link http://www.yiiframework.com/
|
|
* @copyright 2008-2013 Yii Software LLC
|
|
* @license http://www.yiiframework.com/license/
|
|
*/
|
|
|
|
/**
|
|
* CXCache implements a cache application module based on {@link http://xcache.lighttpd.net/ xcache}.
|
|
*
|
|
* To use this application component, the XCache PHP extension must be loaded.
|
|
* Flush functionality will only work correctly if "xcache.admin.enable_auth" is set to "Off" in php.ini.
|
|
*
|
|
* See {@link CCache} manual for common cache operations that are supported by CXCache.
|
|
*
|
|
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
|
|
* @package system.caching
|
|
*/
|
|
class CXCache extends CCache
|
|
{
|
|
/**
|
|
* Initializes this application component.
|
|
* This method is required by the {@link IApplicationComponent} interface.
|
|
* It checks the availability of memcache.
|
|
* @throws CException if memcache extension is not loaded or is disabled.
|
|
*/
|
|
public function init()
|
|
{
|
|
parent::init();
|
|
if(!function_exists('xcache_isset'))
|
|
throw new CException(Yii::t('yii','CXCache requires PHP XCache extension to be loaded.'));
|
|
}
|
|
|
|
/**
|
|
* Retrieves a value from cache with a specified key.
|
|
* This is the implementation of the method declared in the parent class.
|
|
* @param string $key a unique key identifying the cached value
|
|
* @return string|boolean the value stored in cache, false if the value is not in the cache or expired.
|
|
*/
|
|
protected function getValue($key)
|
|
{
|
|
return xcache_isset($key) ? xcache_get($key) : false;
|
|
}
|
|
|
|
/**
|
|
* Stores a value identified by a key in cache.
|
|
* This is the implementation of the method declared in the parent class.
|
|
*
|
|
* @param string $key the key identifying the value to be cached
|
|
* @param string $value the value to be cached
|
|
* @param integer $expire the number of seconds in which the cached value will expire. 0 means never expire.
|
|
* @return boolean true if the value is successfully stored into cache, false otherwise
|
|
*/
|
|
protected function setValue($key,$value,$expire)
|
|
{
|
|
return xcache_set($key,$value,$expire);
|
|
}
|
|
|
|
/**
|
|
* Stores a value identified by a key into cache if the cache does not contain this key.
|
|
* This is the implementation of the method declared in the parent class.
|
|
*
|
|
* @param string $key the key identifying the value to be cached
|
|
* @param string $value the value to be cached
|
|
* @param integer $expire the number of seconds in which the cached value will expire. 0 means never expire.
|
|
* @return boolean true if the value is successfully stored into cache, false otherwise
|
|
*/
|
|
protected function addValue($key,$value,$expire)
|
|
{
|
|
return !xcache_isset($key) ? $this->setValue($key,$value,$expire) : false;
|
|
}
|
|
|
|
/**
|
|
* Deletes a value with the specified key from cache
|
|
* This is the implementation of the method declared in the parent class.
|
|
* @param string $key the key of the value to be deleted
|
|
* @return boolean if no error happens during deletion
|
|
*/
|
|
protected function deleteValue($key)
|
|
{
|
|
return xcache_unset($key);
|
|
}
|
|
|
|
/**
|
|
* Deletes all values from cache.
|
|
* This is the implementation of the method declared in the parent class.
|
|
* @return boolean whether the flush operation was successful.
|
|
* @since 1.1.5
|
|
*/
|
|
protected function flushValues()
|
|
{
|
|
for($i=0, $max=xcache_count(XC_TYPE_VAR); $i<$max; $i++)
|
|
{
|
|
if(xcache_clear_cache(XC_TYPE_VAR, $i)===false)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|