php 无限级分类函数
ar=array(0=>array('name'=>'食物','id'=>1,'pid'=>0),
02 1=>array('name'=>'植物','id'=>2,'pid'=>0),
03 3=>array('name'=>'白菜','id'=>3,'pid'=>1),
04 4=>array('name'=>'树','id'=>4,'pid'=>2),
05 5=>array('name'=>'苹果','id'=>5,'pid'=>3),
06 6=>array('name'=>'松树','id'=>6,'pid'=>4),
07 7=>array('name'=>'饮料','id'=>7,'pid'=>1),
08 8=>array('name'=>'测试1','id'=>8,'pid'=>7),
09 9=>array('name'=>'测试2','id'=>9,'pid'=>8),
10 10=>array('name'=>'人民','id'=>10,'pid'=>9),
11 11=>array('name'=>'小米','id'=>11,'pid'=>0),
12 );
13
14 echo '
17
18 function tre($tree,$id)
19 {
20 $str = '';
21 $strid = '';
22 foreach ($tree as $key => $item)
23 {
24 if ($item['pid'] == $id) {
25 $i = 0;
26 $i = sonNum($tree,$item['id']);
27 if ($i == 1 || $i == 0) {
28 echo '
29 } else {
30 echo '
31 }
32 //echo '
33 echo $item['name'];
34 echo '
35 tre($tree,$item['id']);
36 }
37 }
38 //tre($tree,$strid);
39 }
40
41 function sonNum($tre,$sum,$totale=1)
42 {
43 foreach ($tre as $key => $value)
44 {
45 if ($value['pid'] == $sum){
46 $totale += sonNum($tre,$value['id'],1);
47 }
48 }
49 return $totale;
50 }
