[Function] strtotime

strtotime
(PHP 3>= 3.0.12, PHP 4 , PHP 5)

strtotime --  Parse about any English textual datetime description into a Unix timestamp
설명
int strtotime ( string time [, int now])

The function expects to be given a string containing an English date format and will try to parse that format into a Unix timestamp relative to the timestamp given in now, or the current time if none is supplied. Upon failure, -1 is returned.

Because strtotime() behaves according to GNU date syntax, have a look at the GNU manual page titled Date Input Formats. Described there is valid syntax for the time parameter.

예 1.

<?php
echo strtotime("now"), "\n";
echo strtotime("10 September 2000"), "\n";
echo strtotime("+1 day"), "\n";
echo strtotime("+1 week"), "\n";
echo strtotime("+1 week 2 days 4 hours 2 seconds"), "\n";
echo strtotime("next Thursday"), "\n";
echo strtotime("last Monday"), "\n";
?>

예 2. - sql의 필드가 datetime 일때 유용 합니다.

<?
$key_time = '2006-10-24 18:30:53';
echo $key_time."<br />";

$strtime = strtotime($key_time);
echo $strtime."<br />";

$r_time = date("r",$strtime);
echo $r_time."<br />";

$datetime = date('Y-m-d h:i:s', $strtime);
echo $datetime."<br />";

echo date("Y-m-d h:i:s", mktime(18, 30, 53, 10, 24, 2006));
?>