- var_dump: documentation ( source)
<?php
$date = new \DateTime('now', new \DateTimeZone('America/Toronto'));
$gmt = new \DateTime('now', new \DateTimeZone('UTC'));
var_dump($date->getTimestamp());
var_dump($gmt->getTimestamp());
echo $date->format('U') . "\n";
echo $gmt->format('U') . "\n";