Query by post type or category

Found solution

    $posts = array_merge($posts1, $posts2);
    function cmp($a, $b) {
         return strcmp($a->post_title, $b->post_title);
    }
    usort($posts, 'cmp');

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)