<?php ???????date_default_timezone_set(‘PRC‘); ???????$mtimestamp = sprintf("%.3f", microtime(true)); // 带毫秒的时间戳 ???????$timestamp = floor($mtimestamp); // 时间戳 ???????$milliseconds = round(($mtimestamp - $timestamp) * 1000); // 毫秒 ???????$datetime = date("Y-m-d H:i:s", $timestamp) . ‘.‘ . $milliseconds; ???????echo sprintf("%s => %s", $mtimestamp, $datetime);//1523856374.820 => 2018-04-16 13:26:14.820?>php 日期时间类型带毫秒
原文地址：https://www.cnblogs.com/phpper/p/8855426.html