Description:
------------
Foreach loop access original array when using references on a previous loop.

Reproduce code:
---------------
<?php

$list = array( 1, 2, 3, 4 );

$new_list = array();

foreach( $list as $item ){
        $z =& $new_list[];
        $z = $item;
}

//unset( $z );

print_r( $new_list );

foreach( $new_list as $z ){
}

print_r( $new_list );



?>


Expected result:
----------------
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
)
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
)

Actual result:
--------------
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
)
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 3
)