How to convert date to timestamp (timestamp) in php

In PHP, you can use the strtotime() function to convert date (date) to timestamp (timestamp). This function can parse the date and time description of any string into a Unix timestamp. The syntax format is " strtotime(date as string)".

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php will convert date (date) For timestamp (timestamp)

<?php
echo strtotime("2021-06-03 16:00:10")."<br>";    //输出 1620979210
echo strtotime("10 September 2021")."<br>";    //输出 1631203200
echo strtotime("+1 day"), "<br />"."<br>";    //输出明天此时的时间戳 
?>

Output:

1622707210
1631203200
1622787020

Description:

strtotime() function will Any string datetime description resolves to a Unix timestamp (number of seconds since January 1 1970 00:00:00 GMT). This function is the inverse function of date() and returns a timestamp if successful, otherwise it returns FALSE. Syntax:

int strtotime ( string time [, int now] )

Parameter	Description
time	Required. Specifies a date/time string.
now	Optional. Specifies the timestamp used to calculate the return value. If this parameter is omitted, the current time is used.

Example:

<?php
// 设置时区
date_default_timezone_set("PRC");

echo strtotime("now")."<br>";
echo strtotime("now")."<br>";
echo strtotime("10 September 2021")."<br>";
echo strtotime("+1 day")."<br>";
echo strtotime("+1 week")."<br>";
echo strtotime("+1 week 2 days 4 hours 2 seconds")."<br>";
echo strtotime("next Thursday")."<br>";
echo strtotime("last Monday")."<br>";
?>

Output:

1622700860
1622700860
1631203200
1622787260
1623305660
1623492862
1623254400
1622390400

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