Description:
------------
array_intersect_assoc() doesn't produce warning message when incorrect number of arguments are passed (i.e. Zero argument or one less than expected number of arguments).

This problem is applicable to php5.3 and php6 only. On php5 it generates  correct warning message.


Reproduce code:
---------------
<?php
$arr = array(1, 2, 3, 4);
var_dump( array_intersect_assoc() );
var_dump( array_intersect_assoc($arr) );
?>

Expected result:
----------------
Warning: array_intersect_assoc(): at least 2 parameters are required, 0 given in %s on line %d
NULL

Warning: array_intersect_assoc(): at least 2 parameters are required, 1 given in %s on line %d
NULL

Actual result:
--------------
NULL
NULL