求修改个无限分类递归函数

// ========== findFather函数 START ==========     // 功能:无限级分类之找出父层的相关数据     // 参数:$classID,当前子层的编号     //          $type,0找自己 1找父亲 2找祖先 3找家谱     // 字段:classID主键,自生成 classFID父编号     //          className分类名称 classCount分类统计function findFather($classID,$type)     {       global $flist,$forefather;        define("_STR_CUT", " -> ");        $sql         = 'select * from mar_menu where id = "'.$classID.'"';       	$res1       =  _query($sql);         $row=_fetch_array($res1);        if ($row)         {            //取值            $classFID  = $row['ppid'];            $classID   = $row['id'];            $className = $row['m_title'];            //若找到祖先,即classFID为0,则将函数状态设为0            if ($classFID == '0') $type='0';         }        if ($type == '1') //找父亲         {            $type = '0'; //第二次开始函数状态为0,即循环2次             findFather($classFID,$type);             $flist = $flist . _STR_CUT . $className; //生成家谱         }        else if ($classFID != '0' AND $type == '2') //找祖先,状态type为2,祖先classFID不为0未找到         {             findFather($classFID,$type);             $flist = $flist . _STR_CUT . $className; //生成家谱         }        else if ($type == '3')         {             findFather($classFID,$type);            $flist = $flist . _STR_CUT . $className; //生成家谱         }        else if ($type == '0')         {            $forefather = $className;         }        $result = $forefather . $flist;        return $result;             }

求修改下 用循环 直接查找所有的父栏目
这儿函数 只能到3层节点 能否修改成无限的.我的数据有可能超过4层节点

回复讨论(解决方案)

$classFID = $row['ppid'];
$classID = $row['id'];
$className = $row['m_title'];

应该是
$classFID = $row['classFID'];
$classID = $row['classID'];
$className = $row['className'];

这个写错了 不好意思

$f=array();
function findFather($classID,$type){
global $db;
global $f;
for($t=0;$t<=$type;$t++){
$res=$db->query("select * from mar_menu where classID=$classID");
findFather($res[0]['classFID'],$type-1);
$f[]=$res[0]['className'];
return ;
}
}
findFather(4,1);
echo implode("->",$f);

$conn = mysql_connect("localhost", "test", "test");mysql_select_db("test", $conn);mysql_set_charset("utf8", $conn);$res = mysql_query("select * from region");$data = array();while ($row = mysql_fetch_assoc($res)){    $data[] = $row;}print_r($data);function findParents($class_id){    global $data;    static $_tree;    foreach ($data as $key => $val)    {        if ($val['classID'] == $class_id)        {            $pid = $val['classFID'];            $_tree[] = $val;            if ($pid != 0)            {                findParents($pid);            }        }    }    return $_tree;}$rs = findParents(4);krsort($rs);print_r($rs);