Description:
------------
I can't work out if this a bug or php is working differently than I expected, so i thought I'd report it just in case.
$var1 is not 0 so why is the if statement saying it is?

Reproduce code:
---------------
<?php
class test {
	function __construct($var1) {
		print($var1 . " ");
		if($var1 == 0) {
			print('zero');
		}
		if($var1 != 0) {
			print('not');
		}
	}
}
$test = new test('string');
?>

Expected result:
----------------
string not

Actual result:
--------------
string zero