- var_dump: documentation ( source)
- date_default_timezone_set: documentation ( source)
- date: documentation ( source)
- strtotime: documentation ( source)
<?php
date_default_timezone_set( "America/Chicago" );
$time = strtotime( '07:00:00 PM 07/14/2014');
echo $time;
$datetime = date( "H:i Y-m-d", $time);
var_dump( $datetime);