本文实例讲述了php简单实现无限分类树形列表的方法。分享给大家供大家参考。具体如下：

$items = array(   1 => array("id" => 1, "pid" => 0, "name" => "江西省"),   2 => array("id" => 2, "pid" => 0, "name" => "黑龙江省"),  3 => array("id" => 3, "pid" => 1, "name" => "南昌市"),   4 => array("id" => 4, "pid" => 2, "name" => "哈尔滨市"),  5 => array("id" => 5, "pid" => 2, "name" => "鸡西市"),   6 => array("id" => 6, "pid" => 4, "name" => "香坊区"),   7 => array("id" => 7, "pid" => 4, "name" => "南岗区"),   8 => array("id" => 8, "pid" => 6, "name" => "和兴路"),   9 => array("id" => 9, "pid" => 7, "name" => "西大直街"),   10 => array("id" => 10, "pid" => 8, "name" => "东北林业大学"),  11 => array("id" => 11, "pid" => 9, "name" => "哈尔滨工业大学"),  12 => array("id" => 12, "pid" => 8, "name" => "哈尔滨师范大学"),  13 => array("id" => 13, "pid" => 1, "name" => "赣州市"),   14 => array("id" => 14, "pid" => 13, "name" => "赣县"),   15 => array("id" => 15, "pid" => 13, "name" => "于都县"),   16 => array("id" => 16, "pid" => 14, "name" => "茅店镇"),   17 => array("id" => 17, "pid" => 14, "name" => "大田乡"),   18 => array("id" => 18, "pid" => 16, "name" => "义源村"),   19 => array("id" => 19, "pid" => 16, "name" => "上坝村"),   20 => array("id" => 20, "pid" => 0, "name" => "广东省"),   21 => array("id" => 21, "pid" => 20, "name" => "广州市"),); $t = array(); foreach ($items as $id => $item) {   if ($item["pid"]) {     $items[$item["pid"]][$item["id"]] = &$items[$item["id"]];    $t[] = $id;   } } foreach($t as $u) {   unset($items[$u]); } echo "<pre>"; print_r($items);

希望本文所述对大家的php程序设计有所帮助。