rhymix/classes/cache/CacheApc.class.php

<?php
	class CacheApc extends CacheBase {
		var $valid_time = 3600;

		function getInstance(){
            if(!$GLOBALS['__CacheApc__']) {
                $GLOBALS['__CacheApc__'] = new CacheApc();
            }
            return $GLOBALS['__CacheApc__'];
		}

		function CacheApc(){
		}

		function isSupport(){
			return apc_store('xe', 'xe', 1);
		}

		function put($key, $buff, $valid_time = 0){
			if($valid_time == 0) $valid_time = $this->valid_time;
			return apc_store(md5(_XE_PATH_.$key), array(time(), $buff), $valid_time);
		}

		function isValid($key, $modified_time = 0)
		{
			$key = md5(_XE_PATH_.$key);
			$obj = apc_fetch($key, $success);
			if(!$success || !is_array($obj)) return false;
			unset($obj[1]);

			if($modified_time > 0 && $modified_time > $obj[0])
			{
				$this->delete($_key);
				return false;
			}
			
			return true;
		}

		function get($key, $modified_time = 0)
		{
			$key = md5(_XE_PATH_.$key);
			$obj = apc_fetch($key, $success);
			if(!$success || !is_array($obj)) return false;

			if($modified_time > 0 && $modified_time > $obj[0])
			{
				$this->_delete($key);
				return false;
			}

			return $obj[1];
		}

		function _delete($_key)
		{
			$this->put($_key,null,1);
		}

		function delete($key)
		{
			$this->_delete(md5(_XE_PATH_.$key));
		}

		function truncate() 
		{
			apc_clear_cache('user');
		}
	}
?>