Question

getting an Warning: Invalid argument supplied for foreach() in /home/maxer/domains/x/public_html/x/items.php on line 41

line 41 is the foreach

$items = getUserList($user,0,100);

foreach($items as $item){

    echo "<img src=\"".$item['image']."\">"; //image
    echo ""; //title
    echo ""; //button for add to list

}

Answer 1

your function getUserList does not returning array
to make sure that $items is array write like this:

$items = (array) getUserList($user,0,100);