大阵列，问题呼应它

I got this problem trying to echo out a big array.

print_r looks like this: http://codepaste.net/5js97a

There's no problem echoing out the first 2 rows like this in a foreach loop: $item['name'], but for the rest of them deeper inside the array, I just get an error.

Thanks!

Code:

function categories($parent = NULL) {
      $query = $this->db->where('parent_id', $parent)->get('categories');
      $results = $query->result_array();

      foreach($results as $result) {
           $child_array = Forummodel::categories($result['id']);
           if(sizeof($child_array) == 0) {
                array_push($results, $result['name']);
           } else {
                array_push($results, array($result['name'], $child_array));
           }
      }

      return $results;
} 

Im also using codeigniter

You are iterating on an increasing array. Here is your code:

function categories($parent = NULL) {
    $query = $this ->db ->where('parent_id', $parent) ->get('categories');
    $results = $query->result_array();
    foreach($results as $result) {
        $child_array = Forummodel::categories($result['id']);
        if(sizeof($child_array) == 0) {
            array_push($results, $result['name']);
        } else {
            array_push($results, array($result['name'], $child_array));
        }
    }
    return $results;
}

The foreach is iterating down the array $results and you are adding to it with each loop, plus, by the time you hit an iteration where $result doesn't contain 'id' or 'name' you are probably getting the error. You might want to put the child arrays into another array and merge them after the foreach loop if you still want to do that.