PHP项目中经常用到的无限极分类函数

//无限极分类函数调用
function getTree($data,$parent_id = 0,$dept_level = 0){
static $tree = [];
foreach ($data as $row){
if($row['dept_pid'] == $parent_id){
$row['dept_level'] = $dept_level;
$tree[] = $row;
getTree($data,$row['dept_id'],$dept_level+1);
}
}
return $tree;
}