<?phpheader("content-type:text/html;charset=utf8");/*通过子栏目查找父栏目，范围小到范围大*/$area=array(array('cat_id'=>1,'province'=>'福建省','parent_id'=>0),array('cat_id'=>2,'province'=>'龙岩市','parent_id'=>1),array('cat_id'=>3,'province'=>'广东省','parent_id'=>0),array('cat_id'=>4,'province'=>'佛山市','parent_id'=>3),array('cat_id'=>5,'province'=>'江西省','parent_id'=>0),array('cat_id'=>6,'province'=>'南昌市','parent_id'=>5),array('cat_id'=>7,'province'=>'赣州市','parent_id'=>5),array('cat_id'=>8,'province'=>'宁都县','parent_id'=>7),);functionson($arr,$cat_id){static$list;foreach($arras$v){if($v['cat_id']==$cat_id){print_r($v);$list[]=$v;son($arr,$v['parent_id']);}}return$list;}$list=son($area,8);foreach($listas$v){echo'--->',$v['province'];}/**执行结果源代码Array([cat_id]=>8[province]=>宁都县[parent_id]=>7)Array([cat_id]=>7[province]=>赣州市[parent_id]=>5)Array([cat_id]=>5[province]=>江西省[parent_id]=>0)--->宁都县--->赣州市--->江西省**/?>