- date: documentation ( source)
- strtotime: documentation ( source)
<?php
//echo date('Y/m/d H:i', strtotime('2013-07-16 17:30') + 15 * 3600);
echo date('Y/m/d H:i')."\n";
echo date('Y/m/d H:i', $dateStart = strtotime(date('Y/m/d').' 17:30'))."\n";
echo date('Y/m/d H:i', $dateEnd = strtotime(date('Y/m/d').' 17:30') + 5 * 3600)."\n";