Calling key/value in multidimensional array
===

I'm pretty sure I'm just overthinking this but I can't think of any other ways right now.

I have a hidden field that contains image_ids. The value of the hidden field looks like "1076,1077,1078"

In my Controller, I am doing this:

        // get the value from hidden field
        $image_string = $this->input->post('images');
        
        // create array from comma separated string
        $images = explode(',', $image_string);
        
        $image = array();
        
        // get image data from the database, returns an array of the database row
        foreach ($images as $id) {
          $image[$id] = $this->file_model->get_image_data($id);
        }
    
       print_r($image);
    

When I do the `print_r(image);` at the end, I get this:

    Array (
     [0] => stdClass Object ( [image_id] => 1076 )
     [1] => stdClass Object ( [image_id] => 1077 )
     [2] => stdClass Object ( [image_id] => 1078 )
    )

This is where I'm stuck. I need to do another foreach to echo out each image_id, but I can't figure out how to call it. What should the 2nd foreach look like?