Description:
------------
A variable which is an array pass to function as value but this variable behaves 
as pass by reference.

Test script:
---------------
/*
 * an argument $bar pass to function by value not by reference
 */
function foo($bar)
{
	$bar[0] = 'error';
}

/*
 * any array variable
 */
$bar[0] = 'OK';
print_r($bar); echo '<br />';

 /*
  * it will causes an error in function foo()
  * create any reference to value of array
  */
$any_reference = & $bar[0];

/*
 * although the argument $bar pass to function by value
 * it behaves as argument $bar pass to funkction by reference
 */
foo($bar);
print_r($bar); echo '<br />';

Expected result:
----------------
Array ( [0] => OK ) 

Actual result:
--------------
Array ( [0] => error )