Analysis of PHP Method for Obtaining Zero Time Stamp of the Day

In this paper, an example is given to describe the method of obtaining the zero timestamp of the day by PHP. Share it for your reference, as follows:

In today's project, what I want to see every day is all the information of the day, so I want to get the timestamp at zero of the day and review the relevant knowledge of timestamp, which is summarized as follows:

<?php
header("Content-type:text/html;charset=utf-8");
// Set Beijing time as the default time zone 
date_default_timezone_set('PRC');
// Output the current time 
echo date("Y-m-d H:i:s",time()); //2016-08-11 10:30:32
// Get the timestamp of the early morning of the day 
$today = strtotime(date("Y-m-d"),time());
echo '<br>';
echo $today; //1470844800
echo '<br>';
// Verify that the timestamp of the early morning of the day is correct 
echo date("Y-m-d H:i:s",$today); //2016-08-11 00:00:00
echo '<br>';
// Of the day 24 Point timestamp 
$end = $today+60*60*24;
// Validate the current day's 24 Is the point timestamp correct 
echo date("Y-m-d H:i:s", $end); //2016-08-12 00:00:00
echo '<br>';
// Gets the timestamp of the zero point of the specified time 
$time = strtotime('2014-06-06');
echo '<br>';
echo $time; //1401984000
echo '<br>';
// Verify that it is a timestamp for the specified time 
echo date("Y-m-d H:i:s",$time); //2014-06-06 00:00:00
?>

PS: Here are some time and date related tools for your reference:

Online date/day calculator:
http://tools.ofstack.com/jisuanqi/date_jisuanqi

Online date calculator/difference days calculator:
http://tools.ofstack.com/jisuanqi/datecalc

Online Date-Day Difference Calculator:
http://tools.ofstack.com/jisuanqi/onlinedatejsq

Unix timestamp (timestamp) conversion tool:
http://tools.ofstack.com/code/unixtime

For more readers interested in PHP related contents, please check the topics on this site: "Summary of php Date and Time Usage", "Encyclopedia of PHP Array (Array) Operation Skills", "Introduction to php Object-Oriented Programming", "Introduction to php String (string) Usage", "Introduction to php+mysql Database Operation" and "Summary of Common Database Operation Skills of php"

I hope this article is helpful to everyone's PHP programming.