织梦cms明文加密处理函数

function GetEncodePwd($pwd)
    {
        global $cfg_mb_pwdtype;
        if(empty($cfg_mb_pwdtype)) $cfg_mb_pwdtype = '32';
        switch($cfg_mb_pwdtype)
        {
            case 'l16':
                return substr(md5($pwd), 0, 16);
            case 'r16':
                return substr(md5($pwd), 16, 16);
            case 'm16':
                return substr(md5($pwd), 8, 16);
            default:
                return md5($pwd);
        }
    }