Description:
------------
I'm not sure if this is a bug or actual accepted 
behavior, but array_merge seems to lose references. (I 
would assume array_merge_recursive does too, but I've 
not tested that.) I think it would be ideal behavior if 
this did not happen, as I've just come upon a real world 
situation where my desired behavior would be very 
useful. Test on both PHP 4.3.6 and July 10th snapshot of 
PHP 5.

Reproduce code:
---------------
$one=array(1,2,3);
$two=array(4,5,6);
$three=&$two;

foreach($one as $val) echo "$val<br>";
foreach($three as $val) echo "$val<br>";

echo "-------------<br>";

$four=array_merge($one,&$three);
$two[0]="x";
$two[1]="x";
$two[2]="x";
foreach($four as $val) echo "$val<br>";

Expected result:
----------------
1
2
3
4
5
6
-------------
1
2
3
x
x
x

Actual result:
--------------
1
2
3
4
5
6
-------------
1
2
3
4
5
6