Description:
------------
When a ReflectionException is thrown for any reflection class, an exception code is not set (i.e. it always returns 0).  This makes it quite difficult to identify what caused the exception.  As a result, I am forced to parse the exception message to determine what went wrong instead of relying on a constant from the getCode method.

Test script:
---------------
<?php
try { 
$reflectionFunction = new ReflectionFunction('foo'); 
} catch(Exception $e){ 
var_dump($e->getCode()); 
}

Expected result:
----------------
A non-zero code.

Actual result:
--------------
int(0)