如何在php中限制数组深度

Question

我想在多维数组中达到10级。

这是我的代码，我得到无限的深度，但我想限制这10个级别。

function tree($parent){
global $db;
$sql = "SELECT * FROM clients WHERE parent_id = $parent ";

$users=$db->query($sql);
$return = array();
while($parent = $users->fetchObject()) {
  $return[$parent->client_id] = $parent;

  if(have_data($parent->client_id)){
    $return[$parent->client_id]->subs = tree($parent->client_id);
  }
}
return $return;
}

print_r(树(1,0));

输出为:

  Array
    (
    [2] => stdClass Object
    (
        [client_id] => 2
        [parent_id] => 1
        [client_name] => TEST
        [subs] => Array
            (
                [4] => stdClass Object
                    (
                        [client_id] => 4
                        [parent_id] => 2
                        [client_name] => TEST
                        [subs] => Array
                            (
                                [5] => stdClass Object
                                    (
                                        [client_id] => 5
                                        [parent_id] => 4
                                        [client_name] => ADAm
                                    )
                            )
                    )
                [6] => stdClass Object
                    (
                        [client_id] => 6
                        [parent_id] => 2
                        [client_name] => RAS
                        [subs] => Array
                            (
                                [7] => stdClass Object
                                    (
                                        [client_id] => 7
                                        [parent_id] => 6
                                        [client_name] => RAStest
                                    )
                            )
                    )
            )
    )
[3] => stdClass Object
    (
        [client_id] => 3
        [parent_id] => 1
        [client_name] => ABC
    )
  )

如何将孩子限制在10级，希望得到专家老板的回应。

Answer 1

您可以使用RecursiveIteratorIterator API并使用setMaxDepth()函数，并可以通过此函数getMaxDepth()获得maxDepth

$iterator = new RecursiveIteratorIterator(new RecursiveArrayIterator($myArray));