works for me:
<pre>
<?php
$parent = array(
'name' => 'I am the parent',
'children' => array(
array(
'name' => 'I am the first child',
),
array(
'name' => 'I am the second child',
),
array(
'name' => 'I am the third child',
),
),
);
foreach($parent['children'] as &$child){
$child['parent'] = &$parent;
}
print $parent['children'][1]['parent']['name'];
print_r($parent);
?>