`create_time` datetime() DEFAULT NULL COMMENT '创建时间',

<?php

    $a =  get_msectime();

    $b = get_microtime_format($a*0.001);

    $c = get_data_format($b);

    echo $a;

    echo "<pre>";

    echo $b;

    echo "<pre>";

    echo $c;

    //返回当前的毫秒时间戳

    function get_msectime() {

        list($msec, $sec) = explode(' ', microtime());

        $msectime =  (float)sprintf('%.0f', (floatval($msec) + floatval($sec)) * 1000);

        return $msectime;

     }

     /**

      *时间戳 转   日期格式 ： 精确到毫秒，x代表毫秒

      */

     function get_microtime_format($time)

     {

        if(strstr($time,'.')){

            sprintf("%01.3f",$time); //小数点。不足三位补0

            list($usec, $sec) = explode(".",$time);

            $sec = str_pad($sec,3,"0",STR_PAD_RIGHT); //不足3位。右边补0

        }else{

            $usec = $time;

            $sec = "000";

        }

        $date = date("Y-m-d H:i:s.x",$usec);

        return str_replace('x', $sec, $date);

     }

      /** 时间日期转时间戳格式，精确到毫秒，

      *

      */

     function get_data_format($time)

     {

        list($usec, $sec) = explode(".", $time);

        $date = strtotime($usec);

        $return_data = str_pad($date.$sec,13,"0",STR_PAD_RIGHT); //不足13位。右边补0

        return $return_data;

     }