- var_dump: documentation ( source)
- time: documentation ( source)
- date_default_timezone_get: documentation ( source)
<?php
$currentTimezone = new DateTimeZone(date_default_timezone_get());
$timestamp = time();
$date = new DateTime('@' . $timestamp);
$date2 = new DateTime();
$date2->modify('@' . $timestamp);
$date3 = new DateTime();
$date3->setTimestamp($timestamp);
var_dump($date->format('Y-m-d H:i:s e'));
$date->setTimezone($currentTimezone);
var_dump($date->format('Y-m-d H:i:s e')); //update timezone
var_dump($date2->format('Y-m-d H:i:s e'));
var_dump($date3->format('Y-m-d H:i:s e'));