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strtotime (PHP 3 >= 3.0.12, PHP 4, PHP 5) strtotime -- Parse about any English textual datetime description into a Unix timestamp Descriptionint 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.
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";
?>
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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);
}
?>
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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.
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Note:
The valid range of a timestamp is typically from Fri, 13 Dec
1901 20:45:54 GMT to Tue, 19 Jan 2038 03:14:07 GMT. (These are
the dates that correspond to the minimum and maximum values for
a 32-bit signed integer.)
Additionally, not all platforms support negative timestamps, therefore
your date range may be limited to no earlier than the Unix epoch. This
means that e.g. dates prior to Jan 1, 1970 will not work on Windows,
some Linux distributions, and a few other operating systems.
Copyright © 1997 - 2007 by the PHP Documentation Group. This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later. A copy of the Open Publication License is distributed with this manual, the latest version is presently available at http://www.opencontent.org/openpub/.
Please see full copyright text at http://www.php.net/manual/en/copyright.php
Original version of the above documentation is available at http://www.php.net/manual/en/
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