Check if a stdClass object has "entries" in PHP

Question

I have a model that checks for entries en a database. Like this:

public function getByID($id) {     if(false == is_numeric($id))         return false;      $images = array();      $query = $this->db->where("id_album", $id)->order_by("order", "ASC")->get("images");      foreach($query->result() as $row)         $images[] = $row;      return (object) $images; } 

In my view I want to know if I have a rows or not, to show the images or not. I do this:

<?php if(false != isset($content->images)): ?>     <pre><?php print_r($content->images); ?></pre> <?php endif; ?> 

But every time I try to skip when I've no results (i get a stdClass() empty) I fail. I tried isset, $content->images != NULL, !$content->images... I don't know how to do it to skip the "Severity: Notice Message: Undefined variable".

Thank you in advance.

UPDATE:

$content has more sets than images, like $content->_data or $content->title.

When I've NO images on database and i've no return from MySQL, doing this:

<?php echo count($content->images); ?> <pre><?php print_r($content->images); ?></pre> 

The output is:

1 stdClass ( ) 

Answer 1

why cant you just use

if(isset($content->images)) //Isset also will make sure $content is set {  } 

This way your performing checks on both entities.

As images is an object that can be iterated you can also check that.

if(isset($content->images) && is_object($content->images)) {  } 

Also you seem to be using the wrong comparison operators for boolean's, you should be using the strict standards for comparison, which is === and not ==, or !== and not != :)

Merry Christmas