Get Unix timestamp for a GMT date in PHP

Description

The following code shows how to get Unix timestamp for a GMT date.

Example

//w  w w  .  j  a va 2 s. co  m
//gmmktime() basic example

<?php
echo "July 1, 2000 is on a " . date("l", gmmktime(0, 0, 0, 7, 1, 2000));
?>

The code above generates the following result.