Description:
------------
When using array_merge() on an array of objects, the resulting array is linked to 
the source array(s) as if passed by reference so that modifying the resulting 
array after the merge ALSO modifies the source array.

Test script:
---------------
<?php

$obj = (object) null;
$obj->name = 'Bob';

$arrA = array();
$arrB = array($obj); // name = "Bob"

$arrA = array_merge($arrA, $arrB);

// Change name property of first element
$arrA[0]->name = 'Joe';

print_r($arrA);  // name = "Joe"
print_r($arrB);  // name = "Joe"; source array was modified, should still be "Bob

Expected result:
----------------
Array
(
    [0] => stdClass Object
        (
            [name] => Joe
        )
 
)

Array
(
    [0] => stdClass Object
        (
            [name] => Bob
        )
 
)

Actual result:
--------------
Array
(
    [0] => stdClass Object
        (
            [name] => Joe
        )
 
)

Array
(
    [0] => stdClass Object
        (
            [name] => Joe
        )
 
)