### 一、排序
1.表單
`<input type="text" name="{$v.id}" value="{$v.sort}" />`
利用id和值進行更新
2.數據處理
~~~
foreach ($_POST as $id=>$sort){
$db->where(array('id'=>$id))->setField('sort',$sort);
}
~~~
### 二、按類遞歸
1. 靜態類
~~~
class.Category.php
<?php
class Category{
//組合成一維數組
static public function unlimitedForLevel($cate, $html='--', $pid=0, $level=0){
$arr=array();
foreach($cate as $v){
if($v['pid']==$pid){
$v['level']=$level++;
$v['html']=str_repeat($html,$level);
$arr[]=$v;
$arr=array_merge($arr,self::unlimitedForLevel($cate, $htmml, $v['id'], $level+1));
}
}
return $arr;
}
//組合成多維數組
static public function unlimitedForLayer($cate,$name='child',$pid=0){
$arr=array();
foreach($cate as $v){
if($v['pid']==$pid){
$v[$name]=self::unlimitedForLayer($cate,$name,$v['id']);
$arr[]=$v;
}
}
return $arr;
}
//返回所有父集數組
static public function getParents($cate,$id){
$arr=array();
foreach($cate as $v){
if($v['id']==$id){
$arr[]=$v;
$arr=array_merge(self::getParents($cate,$v['pid']),$arr);
}
}
return $arr;
}
//返回所有子集id數組
static public function getChildsId($cate, $pid){
$arr=array();
foreach ($cate as $v){
if($v['pid']==$pid){
$arr[]=$v['id'];
$arr=array_merge($arr,self::getChildsId($cate,$v['id']);
}
}
return $arr;
}
//傳遞一個父集分類ID返回所有子級分類數組
static public function getChildsId($cate, $pid){
$arr=array();
foreach ($cate as $v){
if($v['pid']==$pid){
$arr[]=$v;
$arr=array_merge($arr,self::getChildsId($cate,$v['id']);
}
}
return $arr;
}
}
?>
~~~
2.靜態調用
~~~
import('Class.Category',APP_PATH);
$cate=M('cate')->orde('sort asc')->select();
$this->cate=Category::unlimiteForLevel($cate);
$this->display();
~~~
