Driver_Cache_Driver_File::get_expired_setting

protected function get_expired_setting($key, &$data)
{
    $dataArr = explode(CRLF, $data, 3);
    /*
    $dataArr[0] - 生存期
    $dataArr[1] - 设置时候的时间
    $dataArr[2] - serialize后的数据内容
    */
    if( $dataArr[0]==0 || TIME - $dataArr[1] <= $dataArr[0]   )
    {
        $data = @unserialize($dataArr[2]);
        return array
        (
            'lifetime' => $dataArr[0],
            'settime'  => $dataArr[1],
        );
    }
    else
    {
        return false;
    }
}