- var_dump: documentation ( source)
- timezone_name_from_abbr: documentation ( source)
<?php
$bitch = '/Date(1440960660000+0200)';
$ts = 1440960660000 / 1000;
$_tz = timezone_name_from_abbr('+2');
$tz = new DateTimeZone($_tz);
$dt = new DateTime("@$ts", 'Europe\Prague');
var_dump($dt);