Description:
------------
please run source code, it's self explained
it seems that when use 0 to compare with string, it returns true all the time,
problem in if is when using ==, === has no problem
in switch case, it matches the first non number case

Reproduce code:
---------------
		if (0=="a")	echo "this is ture.";
		$check=0;
		switch ($check)
		{
			case 'a':
			echo "this is a ";
			break;
			default :
			echo "no match";
		}

Expected result:
----------------
no match

Actual result:
--------------
this is ture.this is a