Description:
------------
A false switch case is returning valid.
Perhaps related to key index returned from stat()?


PHP 5.5.9-1ubuntu4.14 (cli) (built: Oct 28 2015 01:34:46) 
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies
    with Zend OPcache v7.0.3, Copyright (c) 1999-2014, by Zend Technologies



Test script:
---------------
<?php
$s = stat('/tmp');
/*
 * I was interested in data from a few keys. However I found the 0/dev key is always resulting as a true case. 
 */
$x = 0;
foreach($s as $k => $v) {
	switch($k) {
		case 'this_does_not_exist_and_should_never_occur':
			echo 'Yet this case occurs: ' . $k . ', ' . $v . "\n";
			$x++;
			break;
		default:
			break;
	}
}
echo "x=" . $x . "\n";
?>

Expected result:
----------------
x=0


Actual result:
--------------
Yet this case occurs: 0, 64769
x=1