Curriculum

PHP Basic

PHP Intro

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PHP Install

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PHP Syntax

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PHP Comments

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PHP Variables

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PHP echo / print

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PHP Data Types

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PHP Strings

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PHP Numbers

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PHP Casting

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PHP Math

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PHP Constants

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PHP Functions

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PHP Arrays

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PHP Superglobals

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PHP RegEx

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PHP Form

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PHP Advanced

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PHP OOP

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MySQL Database

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PHP XML

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PHP Reference

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Text lesson

gmmktime()

Example

Return the Unix timestamp for a GMT date, and then use it to determine the day of that date.

<?php
// Prints: October 3, 1975 was on a Friday
echo “Oct 3, 1975 was on a “.date(“l”, gmmktime(0,0,0,10,3,1975));
?>

Definition and Usage

The gmmktime() function returns the Unix timestamp for a GMT date.

Tip: This function operates the same as mktime(), but the parameters represent a GMT date.

Syntax

gmmktime(hour, minute, second, month, day, year, is_dst)

Parameter Values

Parameter	Description
hour	Optional. Indicates the hour.
minute	Optional. Indicates the minute.
second	Optional. Indicates the second.
month	Optional. Indicates the month.
day	Optional. Indicates the day.
year	Optional. Indicates the year.
is_dst	Optional. Parameters always represent a GMT date, so `is_dst` does not affect the result. Note: This parameter was removed in PHP 7.0; use the new timezone handling features instead.

Technical Details

Return Value:	Returns an integer Unix timestamp.
PHP Version:	4+
PHP Changelog:	PHP 5.1: The `is_dst` parameter was deprecated. PHP 7.0: The `is_dst` parameter was removed.