有一段时间没用过无限极分类，不巧今天又用到，所以特地去翻箱回顾以前。为了避免以后找起来麻烦，特地贴在这里。
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unlimitedForLevel($cate,$html,$v['id'],$level + 1));
}
}
return $arr;
}
/**
* 返回多维数组
* @param [type] $cate 要递归的数组
* @param string $name 子级分类在父分类数组中的 key
* @param integer $pid 父级分类ID。默认为0，表示顶级分类
* @return [type] [description]
*/
static public function unlimitedForlayer($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;
}
/**
* 传递子分类ID返回所有父级分类
* @param [type] $cate 要递归的数组
* @param [type] $id 子分类ID
* @return [type] [description]
*/
static public function getParents($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;
}
/**
* 传递父级分类ID返回所有子分类ID
* @param [type] $cate 要递归的数组
* @param [type] $pid 父级分类ID
* @return [type] [description]
*/
static public function getChildrenId($cate,$pid){
$arr = array();
foreach($cate as $v){
if($v['pid'] == $pid){
$arr[] = $v['id'];
$arr = array_merge($arr,self::getChildrenId($cate,$v['id']));
}
}
return $arr;
}
/**
* 传递父级分类ID返回所有子级分类
* @param [type] $cate 要递归的数组
* @param [type] $pid 父级分类ID
* @return [type] [description]
*/
static public function getChildren($cate,$pid){
$arr = array();
foreach($cate as $v){
if($v['pid'] == $pid){
$arr[] = $v;
$arr = array_merge($arr,self::getChildren($cate,$v['id']));
}
}
return $arr;
}
}
?>
