How to convert time to timestamp in php

PHP provides functions that can easily convert various forms of dates into timestamps. The main functions of this type are:

strtotime(): Convert any English text The datetime description is parsed into a timestamp.

mktime(): Get timestamp from date.

strtotime()

strtotime() function is used to convert the date represented by the English text string into a timestamp. It is the inverse function of date() and returns successfully Timestamp, otherwise returns FALSE.

Syntax:

int strtotime ( string time [, int now] )

Example:

<?php
echo strtotime("2009-10-21 16:00:10");
//输出 1256112010
echo strtotime("10 September 2008");
//输出 1220976000
echo strtotime("+1 day"), "<br />";
//输出明天此时的时间戳
?>

mktime()

mktime() function is used to get a timestamp from a date , returns the timestamp successfully, otherwise returns FALSE.

Grammar:

int mktime(时, 分, 秒, 月, 日, 年)

Example:

<?php
echo mktime(21, 50, 55, 07, 14, 2010);
//输出“1279115455”
?>

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