- time: documentation ( source)
- print_r: documentation ( source)
- date_default_timezone_set: documentation ( source)
<?php
date_default_timezone_set("Europe/Warsaw");
//date_default_timezone_set('America/Los_Angeles');
print time();
$difference = new DateTime();
$difference->setTimeStamp(time() + 60*60*24*3+62);
$difference = $difference->diff(new DateTime());
print_r($difference);