php缓存类(php5版)

php缓存类(php5版)

PHP:  

---


<?php
/**
*  php5写的缓存类，用于更新缓存
*
*
*  To contact the author write to {@link mailto:meng.chao@163.com}
*  or visit author's website http://www.eb163.com
*
* @author 小超
* @version $Id: cache.class.php,v 1.3 2008/2/17 09:30:00 mengchao Exp $
* @package system
*/

class CacheHandler
{

    private static $cache_dir;// 缓存目录

    /**
     * 构造函数
     *
     */
    function __construct()
    {
        self::$cache_dir  = "./cache";
    }

    /**
     * 设置缓存目录
     *
     * @param    string   $cache_dir   缓存目录
     */
    public static function setCacheDir($cache_dir)
    {
        self::$cache_dir = $cache_dir;
    }

    /**
     * 取得所有缓存
     *
     * @param    string   $type   缓存名称
     */
    public static function getCache($type)
    {
        $file_path = self::$cache_dir.'/'.$type.".cache.php";

        if(!file_exists($file_path))
        {
            Return false;
        }

        require_once($file_path);
        return $_CACHE[$type];
    }

    /**
     * 设置缓存
     *
     * @param    string   $type   缓存名称
     * @param    array    $data   缓存数据
     */
    public static function setCache($type, $data)
    {
        $file_path = self::$cache_dir.'/'.$type.".cache.php";
        
        $str = var_export($data,true);
        $out  = "<?php\r\n";
        $out .= "//cachetime ".date("Y-m-d H:i:s")."\r\n";
        $out .= "\$_CACHE['$type'] = ".$str.";\r\n";
        $out .= "?>";

        $fp = fopen($file_path, 'w');
        fwrite($fp, $out);
        fclose($fp);

        return $file_path;
    }
}
?>