if (!function_exists('get_total_millisecond')) {
    /*
    *
    *返回字符串的毫秒数时间戳
    */
    function get_total_millisecond()
    {
        $time = explode (" ", microtime () );
        $time = $time [1] . ($time [0] * 1000);
        $time2 = explode ( ".", $time );
        $time = $time2 [0];
        return (int)$time;
    }
}