Description:
------------
When matching any string against 0 with == or != PHP will say they match.
This is in my eyes absolutely wrong because testing against other types will not result in this behavior.

Test script:
---------------
<?php

echo "null != 'string' -> ";
var_dump(null != 'string');
echo "<br />";

echo "false != 'string' -> ";
var_dump(false != 'string');
echo "<br />";

echo "0 != 'string' -> ";
var_dump(0 != 'string');
echo "<br />";

echo "1 != 'string' -> ";
var_dump(1 != 'string');



Expected result:
----------------
null != 'string' -> bool(true)
false != 'string' -> bool(true)
0 != 'string' -> bool(true)
1 != 'string' -> bool(true) 

Actual result:
--------------
null != 'string' -> bool(true)
false != 'string' -> bool(true)
0 != 'string' -> bool(false)
1 != 'string' -> bool(true)