無限分類ツリーを実装するための簡単なコード_PHP チュートリアル

[php]

$items = array(

1 => array('id' => 1, 'pid' => 0, 'name' => '江西省')、

2 => array('id' => 2, 'pid' => 0, 'name' => '黒竜江省')、

3 => array('id' => 3, 'pid' => 1, 'name' => '南昌市')、

4 => array('id' => 4, 'pid' => 2, 'name' => 'ハルビン市'),

5 => array('id' => 5, 'pid' => 2, 'name' => '鶏西市'),

6 => array('id' => 6, 'pid' => 4, 'name' => 'Xiangfang District'),

7 => array('id' => 7, 'pid' => 4, 'name' => '南港区'),

8 => array('id' => 8, 'pid' => 6, 'name' => '六角路'),

9 => array('id' => 9, 'pid' => 7, 'name' => '西達街'),

10 => array('id' => 10, 'pid' => 8, 'name' => '東北林業大学'),

11 => array('id' => 11, 'pid' => 9, 'name' => 'ハルビン工業大学'),

12 => array('id' => 12, 'pid' => 8, 'name' => 'ハルビン師範大学'),

13 => array('id' => 13, 'pid' => 1, 'name' => '甘州市')、

14 => array('id' => 14, 'pid' => 13, 'name' => 'ガン郡')、

15 => array('id' => 15, 'pid' => 13, 'name' => '玉都県'),

16 => array('id' => 16, 'pid' => 14, 'name' => 'Maodian Town'),

17 => array('id' => 17, 'pid' => 14, 'name' => '大丹郷'),

18 => array('id' => 18, 'pid' => 16, 'name' => '宜源村'),

19 => array('id' => 19, 'pid' => 16, 'name' => 'シャンバ村'),

20 => array('id' => 20, 'pid' => 0, 'name' => '広東省'),

21 => array('id' => 21, 'pid' => 20, 'name' => '広州市')、

);

$t = 配列();

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]);

}

エコー "";

print_r($items);

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本当http://www.bkjia.com/PHPjc/477827.html技術記事 [php] $items = array( 1 = array(id = 1, pid = 0, name = 江西省), 2 = array(id = 2, pid = 0, name = 黒竜江省), 3 = array(id = 3、pid = 1、名前 = 南昌市)、4 = array(id = 4、...)