<?php
	
	function time_diff_val($old_time, $new_time, $is_float = false) {
		$_old_time = strtotime($old_time);
		$_new_time = strtotime($new_time);
		$_diff = ($_new_time - $_old_time);
		
		unset($old_time, $new_time, $_old_time, $_new_time);
		
		return ($_diff <= 0) ? (int) 0 : (($_diff <= (24 * 60 * 60)) ? (int) 1 : (($is_float) ? ($_diff / (24 * 60 * 60)) : ceil($_diff / (24 * 60 * 60))));
	}
	
	print_r(
		array(
			time_diff_val(
				"10.11.2013 00:00",
				"10.12.2014 23:59"
			),
			time_diff_val(
				"10.11.2013 00:00",
				"10.12.2014 23:59",
				true
			)
		)
	);
	
	/*
		GERİYE DÖNEN DEĞER =>
		
		Array
		(
			[0] => 396
			[1] => 395.99930555556
		)
		
	*/