- var_dump: documentation ( source)
- date_default_timezone_set: documentation ( source)
- date_default_timezone_get: documentation ( source)
<?php
date_default_timezone_set("Europe/Dublin");
echo "TZ: " . date_default_timezone_get() . PHP_EOL;
$date = new DateTime("2015-11-26");
$baseDate = new DateTime("1972-01-01");
var_dump($date->diff($baseDate));