1<?php
2// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
3//
4// All Rights Reserved. See copyright.txt for details and a complete list of authors.
5// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
6// $Id$
7
8class Math_Formula_Function_Div extends Math_Formula_Function
9{
10	function evaluate($element)
11	{
12		$elements = [];
13
14		foreach ($element as $child) {
15			$evaluatedChild = $this->evaluateChild($child);
16			$elements[] = ! empty($evaluatedChild) ? $evaluatedChild : 0;
17		}
18
19		$out = array_shift($elements);
20
21		foreach ($elements as $element) {
22			if ($element && is_numeric($out) && is_numeric($element)) {
23				$out /= $element;
24			} else {
25				Feedback::warning(tr('Divide by zero on "%0"', implode(',', $elements)));
26				$out = false;
27			}
28		}
29
30		return $out;
31	}
32}
33