- var_dump: documentation ( source)
- mktime: documentation ( source)
- date_default_timezone_set: documentation ( source)
<?php
$jan1 = mktime(0, 0, 0, 1, 1, 2012);
var_dump($jan1);
date_default_timezone_set('Europe/Lisbon');
$jan1 = mktime(0, 0, 0, 1, 1, 2012);
var_dump($jan1);
?>