Another way of the references & array problem that shows up while copying arrays:

<?

$aArray = Array();
$aArray["test"] = "Hello World!";

$rRef = &$aArray["test"];

echo $rRef."<br>";

$aArray2 = Array();
$aArray2["test"] = "Hello World 2!";

$aArray = $aArray2;

echo $aArray["test"]."<br>";
echo $rRef;

?>

The last echo should return "Hello World 2!" but it doesnt. 

A workaround is to copy the arrays per key:

<?

while (list($key) = each($aArray2)) {
      $aArray[$key] = $aArray2[$key];
}

?>

then all is ok.