Description:
------------
---
From manual page: http://www.php.net/language.types.null
---

if '0' is false when converted to boolean and null is false as well
why 
0==null is true
false==null is true
'' ==null is true 
array()==null is true

but '0' == null is false 

Test script:
---------------
<?php
echo null == 0; //true
echo null == array(); //true
echo null == ''; //true
echo null == '0'; //false
?>


Expected result:
----------------
1111

Actual result:
--------------
111