'post', 'cat' =>$slider_cat, 'posts_per_page'=>-1, 'orderby'=>'post__in'); $wp_query=new WP_Query($args); if ($wp_query->have_posts()) : while ( $wp_query->have_posts() ) : $wp_query->the_post(); if (has_post_thumbnail( $post->ID ) ) { $backyard_slider_attachment = wp_get_attachment_image_src( get_post_thumbnail_id($post->ID ), 'full'); $backyard_slider_imageUrl=$backyard_slider_attachment[0]; ?>