Deep copy Array

deep_copy

<?php
function arrayCopy(array $array)
{
    $hashList = array();
    $iterator = new \RecursiveIteratorIterator(
        new \RecursiveArrayIterator($array),
        \RecursiveIteratorIterator::SELF_FIRST
    );
    $iterator->rewind();

    $prevDepth = 0;
    $current = array();
    $parents = array(&$current);
    foreach ($iterator as $k => $v) {
        if ($iterator->getDepth() < $prevDepth) {
            for ($i = ($prevDepth - $iterator->getDepth()); $i > 0; $i--) {
                array_pop($parents);
            }
            $current = &$parents[count($parents)-1];
        }

        if (is_array($v)) {
            $current[$k] = array();
            array_push($parents, $current[$k]);
            $current =& $current[$k];
        } elseif (is_object($v)) {
            if (!isset($hashList[spl_object_hash($v)])) {
                $hashList[spl_object_hash($v)] = clone $v;
            }
            $current[$k] = $hashList[spl_object_hash($v)];
        } else {
            $current[$k] = $v;
        }

        $prevDepth = $iterator->getDepth();
    }

    $rtn = $parents[0];
    unset($current, $parents, $hashList);
    return $rtn;
}