php简单实现无限分类树形列表的方法

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。

php简单实现无限分类树形列表的方法

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