PHP mktime() function

PHP Date / Time Functions

Example

Returns a UNIX timestamp for a date. Then use it to find the day of the date:

<?php
// Output: October 3, 1975 was on a Friday
echo "Oct 3, 1975 was on a ".date("l", mktime(0,0,0,10,3,1975));
?>

Run Example

Definition and Usage

The gmmktime() function returns the UNIX timestamp of the date.

Tip:This function is similar to gmmktime() The same, but the parameters passed represent the date (not the GMT date).

Syntax

mktime(hour,minute,second,month,day,year,is_dst);
Parameter Description
hour Optional. Specify the hour.
minute Optional. Specify the minute.
second Optional. Specify the second.
month Optional. Specify the month.
day Optional. Specify the day.
year Optional. Specify the year.
is_dst

Optional. If the time is during Daylight Saving Time (DST), set to 1, otherwise set to 0, if unknown set to -1 (default).

If unknown, PHP will look for itself (which may produce unexpected results).

Note:This parameter was deprecated in PHP 5.1.0. Instead, use the new timezone handling features.

Technical Details

Return Value: Returns an integer Unix timestamp, or FALSE if an error occurs.
PHP Version: 4+
Update Log:

PHP 5.3.0: If using is_dst Parameter, then throw an E_DEPRECATED.

PHP 5.1.0: The is_dst parameter is deprecated. If mktime() is called without parameters, it will throw an E_STRICT notice. Please use the time() function instead.

PHP Date / Time Functions