php无限级分类

2013 年 3 月 15 日4230

php无限级分类

来源:中国IT实验室 作者:佚名 发表于:2013-02-25 14:34  点击:

CI的seven给我提供了一个方法,如下: [php] ?php /** * 此方法由@Tonton 提供 * http://http://www.zjjv.com///u/918697 * @date 2012-12-12 */ function genTree5($items) { foreach ($items as $item) $items[$item[pid]][son][$item[id]] = $items[$item[id]

CI的seven给我提供了一个方法,如下: [php]

<?php

/**

* 此方法由@Tonton 提供

* http://http://www.zjjv.com///u/918697

* @date 2012-12-12

*/

function genTree5($items) {

foreach ($items as $item)

$items[$item['pid']]['son'][$item['id']] = &$items[$item['id']];

return isset($items[0]['son']) ? $items[0]['son'] : array();

} http://www.zjjv.com/

/**

* 将数据格式化成树形结构

* @author Xuefen.Tong

* @param array $items

* @return array

*/

function genTree9($items) {

$tree = array(); //格式化好的树

foreach ($items as $item)

if (isset($items[$item['pid']]))

$items[$item['pid']]['son'][] = &$items[$item['id']];

else

$tree[] = &$items[$item['id']];

return $tree;

}

$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'),

);

echo "<pre>";

print_r(genTree5($items));

print_r(genTree9($items));

//后者输出格式,前者类似,只是数组键值不一样,不过不影响数据结构

/*

Array

[0] => Array

[id] => 1

[pid] => 0

[name] => 江西省

[son] => Array

[0] => Array

[id] => 3

[pid] => 1

[name] => 南昌市

[1] => Array

[id] => 13

[pid] => 1

[name] => 赣州市

[son] => Array

[0] => Array

[id] => 14

[pid] => 13

[name] => 赣县

[son] => Array

[0] => Array

[id] => 16

[pid] => 14

[name] => 茅店镇

[son] => Array

[0] => Array

[id] => 18

[pid] => 16

[name] => 义源村

[1] => Array

[id] => 19

[pid] => 16

[name] => 上坝村

[1] => Array

[id] => 17

[pid] => 14

[name] => 大田乡

[1] => Array

[id] => 15

[pid] => 13

[name] => 于都县

[1] => Array

[id] => 2

[pid] => 0

[name] => 黑龙江省

[son] => Array

[0] => Array

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