<?php
	$start_time = 943959600; //10PM
	$finish_time = 943887600; //2AM
	
	//Convert to real times
	$start_time = date('H.i', $start_time); //10PM
	$finish_time = date('H.i', $finish_time); //2AM

	if ($start_time > $finish_time) {
		$hoursworked = $start_time - $finish_time;
	} else {
		$hoursworked = $finish_time - $start_time;
	}
	
	echo $hoursworked; //Spits out 20 hours but need it to spit out 4 hours
?>