php无限极分类整理

$list = array (
array ('id' => '1','menuname' => '系统设置','parentid' => '0','sort' => '0',),
array ('id' => '2','menuname' => '用户管理','parentid' => '0','sort' => '1',),
array ('id' => '3','menuname' => '文章管理','parentid' => '0','sort' => '2',),
array ('id' => '4','menuname' => '评论管理','parentid' => '0','sort' => '3',),
array ('id' => '5','menuname' => '类别管理','parentid' => '0','sort' => '4',),
array ('id' => '6','menuname' => '用户列表','parentid' => '1','sort' => '0',),
array ('id' => '7','menuname' => '用户审核','parentid' => '2','sort' => '2',),
array ('id' => '8','menuname' => '文章新增','parentid' => '3','sort' => '3',),
array ('id' => '9','menuname' => '文章审核','parentid' => '3','sort' => '4',),
);
function tree(&$list,$parent_id,$deep){
static $tree = array();
foreach($list as $v){
if($v['parentid'] == $parent_id){
$v['sort'] = $deep;
$tree[] = $v;
tree($list,$v['id'],$deep+1);
}
}
return $tree;
}

$result = tree($list,0,0); // 无限极分类
echo '<pre>';print_r($result);
echo '<pre>';
foreach($result as $v){
echo '|' . str_repeat('----',$v['sort']);
echo $v['menuname'];
echo '<br />';
}