What does this output?
<?php
$array = array();
$new = 9;
$array[] =& $new;
$new = 18;
$array[] =& $new;
var_dump($array);
?>
<?php
$array = array();
$new = 9;
$array[] =& $new;
$new = 18;
$array[] =& $new;
var_dump($array);
?>