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

strtotime -- Parse about any English textual datetime description into a Unix timestamp

Description

int strtotime ( string time [, int now] )

The function expects to be given a string containing a US English date format and will try to parse that format into a Unix timestamp (the number of seconds since January 1 1970 00:00:00 GMT), relative to the timestamp given in now , or the current time if none is supplied.

This function will use the TZ environment variable (if available) to calculate the timestamp. Since PHP 5.1.0 and if the TZ variable isn't set, the date.timezone ini configuration option will be used. If none of these are available, "GMT" is assumed.

Parameters

time

The string to parse, according to the GNU Date Input Formats syntax

now

The timestamp used to calculate the returned value

Return Values

Returns a timestamp on success, FALSE otherwise. Previous to PHP 5.1.0, this function would return -1 on failure.

ChangeLog

Version Description 5.1.0 It now returns FALSE on failure, instead of -1 . Added the date.timezone ini option.

Examples

Example 1. A strtotime() example

<?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";
?>

Example 2. Checking for failure

<?php
$str = 'Not Good';

// previous to PHP 5.1.0 you would compare with -1, instead of false
if (($timestamp = strtotime($str)) === false) {
    echo "The string ($str) is bogus";
} else {
    echo "$str == " . date('l dS of F Y h:i:s A', $timestamp);
}
?>

Notes

Warning

In PHP 5 up to 5.0.2, "now" and other relative times are wrongly computed from today's midnight. It differs from other versions where it is correctly computed from current time.

Related Function(s)

strptime()