undefined index issue after casting from object to array

问题

I am facing a problem, few days ago I had this issue which is solved but when I was retrieving data it was object so with the help of the below code I have converted that as array but now when I try to access the array I am getting Undefined index notice.

Controller

public function downline_income($userId = null, $offset = 0) {
        $userId = user::id();
        $limit = AZ::setting('record_per_page');
        $objUser = new User_Object;
        $objUser->id = $userId;
        $downline = $this->user->getDownline($objUser);
        $downline = $this->object_to_array($downline);
        AZ::layout('left-content', array(
            'block' => 'account/downline_income',
            'user' => $userId,
            'q' => $userId,
            'data' => $downline,
        ));

public function object_to_array($obj) {
    if (is_object($obj))
        $obj = (array) $obj;
    if (is_array($obj)) {
        $new = array();
        foreach ($obj as $key => $val) {
            $new[$key] = $this->object_to_array($val);
        }
    } else
        $new = $obj;
    return $new;
}

When var_dump in downline_income.php(view) below is the output.

//code
$as = $data;
echo "<pre>";
print_r($as['User_Objectchildren']);

OUTPUT

array(3) {
  ["User_Objectchildren"]=>
  array(10) {
    [0]=>
    array(22) {
      ["User_Objectchildren"]=>
      array(0) {
      }
      ["level"]=>
      int(1)
      ["id"]=>
      string(4) "1147"
      ["gid"]=>
      string(1) "4"
       //
       ...

And on print_r

Array
(
    [User_Objectchildren] => Array
        (
            [0] => Array
                (
                    [User_Objectchildren] => Array
                        (
                        )

                    [level] => 1
                    [id] => 1147
                    [gid] => 4
                    [parent_id] => 1112
                    [username] => test 9
                    [email] => kapil789654@abc.com
                    [name] => test9
                    [status] => 0
                    [registerd] => 2017-04-20 09:03:10
                    [last_login] => 0000-00-00 00:00:00
                    [password] => 4eca045dfa240f56a1f9d45eaa53b71c6eccd6a7
                    [tranjection_password] => 
                    [package_id] => 6
                    [user_id] => 1147
                    [purchase_date] => 2017-04-20 09:03:11
                    [confirm_date] => 0000-00-00 00:00:00
                    [package_name] => USD 1000
                    [amount] => 1000
                    [daily_income] => 12
                    [total_income] => 600
                    [time_duration] => 60
                )

            [1] => Array
                (
                    [User_Objectchildren] => Array
                        (
                        )

                    [level] => 1
                    [id] => 1146
                    [gid] => 4
                    [parent_id] => 1112
                    [username] => test8
.....

When try to print print_r($as['User_Objectchildren']);

A PHP Error was encountered

Severity: Notice

Message: Undefined index: User_Objectchildren

Filename: account/downline_income.php

Line Number: 43

回答1:

I was looking at both question and found that you can do that without creating objects. So you don't need to cast any object to array. You will get simple std array.

follow the below code.

Controller

public function downline_income($userId = null, $offset = 0) {
    $userId = user::id();
    $limit = AZ::setting('record_per_page');
    $objUser = new stdClass();
    $objUser->id = $userId;
    $downline = $this->user->getDownline($objUser);

    AZ::layout('left-content', array(
        'block' => 'account/downline_income',
        'user' => $userId,
        'total_users' => $total_users,
        'pagination' => $pagination,
        'q' => $userId,
        'data' => $downline,
        'offset' => $offset,
    ));
}

public function getDownline($obj, $level = 0) {
    $obj->level = $level;

    $where = array('parent_id' => $obj->id);
    $this->db->select('users.*');
    $this->db->where($where);

    $query = $this->db->get('users')->result();

    foreach ($query as $objUser) {
        $obj->data[] = $this->getDownline($objUser, ($level + 1));
    }

    return $obj;
}

来源：https://stackoverflow.com/questions/43595202/undefined-index-issue-after-casting-from-object-to-array

标签

php

arrays

codeigniter

object

casting