树状无限极分类getTree tree

树状无限极分类   提高2种方式
function getTree($list,$id=0,$level=0) {
    static $tree = array();
    foreach($list as $row) {
        if($row["pid"]==$id) {
            $row["level"] = $level;
            $row["name"] = str_repeat("----",$level). $row["name"];
            $tree[] = $row;
            $this->getTree($list, $row["id"], $level + 1);
        }
    }
    return $tree;
}

function getTree($list,$pid=0,$level=0) {
    static $tree = array();
    foreach($list as $row) {
        if($row["dept_pid"]==$pid) {
            $row["dept_level"] = $level;
            $tree[] = $row;
            getTree($list, $row["dept_id"], $level + 1);
        }
    }
    return $tree;
}