怎么生成个类似TREE结构的数组

array(

0=>array('url'=>a.php,'name'=>A页面,'zijiedian'=>array(0=>array('url'=>c.php,'name'=>C页面),1=>array('url'=>e.php,'name'=>E页面)))

1=>array('url'=>b.php,'name'=>B页面,'zijiedian'=>array(0=>array('url'=>d.php,'name'=>D页面)))

)