- date_default_timezone_set: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
date_default_timezone_set('Australia/Melbourne');
$time = date('G:i');
$timestamp = strtotime($time);
$timestamp_one_hour_later = $timestamp + 3600;
echo $time;
echo "<br>";
echo $timestamp;
echo "<br>";
echo $timestamp_one_hour_later
?>