Description:
------------
While playing with big arrays I discovered this:

If you assign some array values to a variable by reference, you can fuck up the array.

When you dump the array contents with print_r() or var_dump() you see something else that with an combination of foreach and echo (or print_r) on the value.

If tested my reproduce code with PHP (CLI) 4.3.2, 4.3.8, 4.3.10, 5.0.0 and 5.0.3 under Windows XP SP2. Always the same result. But I discovered the issue (other code) on a Linux system running PHP (CGI) 4.3.10.

It looks a bit like Bug #29992, and I'm sorry if filing a duplicate.

But I am not complaining about the unexpected values, I am complaining about getting different content from the same array when using a different method.

Reproduce code:
---------------
<? $test = array();
for( $i=0; $i<8; $i++ )
	$test["key {$i}"] = "value {$i}";

$keys = array( 'key 0', 'key 2', 'key 4' );

foreach( $keys as $key )
	$t =& $test[$key];

print_r( $test );
foreach( $test as $k=>$t ) 
	echo "[{$k}] {$t}\n";

echo "---\n";

asort( $test );

foreach( $test as $k=>$t ) 
	echo "[{$k}] {$t}\n";

Expected result:
----------------
[Note: I'm not sure whether it should exactly look like this, but at least the three blocks should print the same key=>value pairs.]
Array
(
    [key 0] => value 0
    [key 1] => value 1
    [key 2] => value 2
    [key 3] => value 3
    [key 4] => value 4
    [key 5] => value 5
    [key 6] => value 6
    [key 7] => value 7
)
[key 0] value 0
[key 1] value 1
[key 2] value 2
[key 3] value 3
[key 4] value 4
[key 5] value 5
[key 6] value 6
[key 7] value 7
---
[key 0] value 0
[key 1] value 1
[key 2] value 2
[key 3] value 3
[key 4] value 4
[key 5] value 5
[key 6] value 6
[key 7] value 7

Actual result:
--------------
Array
(
    [key 0] => value 0
    [key 1] => value 1
    [key 2] => value 2
    [key 3] => value 3
    [key 4] => value 4
    [key 5] => value 5
    [key 6] => value 6
    [key 7] => value 7
)
[key 0] value 0
[key 1] value 1
[key 2] value 2
[key 3] value 3
[key 4] value 3   <--
[key 5] value 5
[key 6] value 6
[key 7] value 7
---
[key 0] value 0
[key 1] value 1
[key 2] value 2
[key 3] value 3
[key 5] value 5
[key 6] value 6
[key 7] value 7   <--
[key 4] value 7   <--