/**
* 用于下拉的多级菜单结构归类
* @param
$arr
* @param int
$id
* @param int
$level
* @return array
*/
function nodeTree
($arr,
$id = 0,
$level = 0
) {
static
$array = array
();
foreach
($arr as
$v) {
if ($v['parent_id'] == $id) {
$v['level'] = $level;
$array[] = $v;
nodeTree
($arr,
$v['id'],
$level + 1
);
}
}
return $array;
}
/**
* 多层分类树状图
* @param
$list 原始数组
* @param string
$pk 当前分类id
* @param string
$pid 父类id
* @param string
$child 子类键名
* @param int
$root 顶级分类
* @return array 多级结构数组
*/
function generateTree
($list,
$pk = 'id',
$pid = 'parent_id',
$child = 'children',
$root = 0
)
{
$tree = array
();
$packData = array
();
foreach
($list as
$data) {
$packData[$data[$pk]] = $data;
}
foreach
($packData as
$key => $val) {
if ($val[$pid] == $root) {
$tree[] = &$packData[$key];
} else {
$packData[$val[$pid]][$child][] = &$packData[$key];
}
}
return $tree;
}
