explode( ",", $postCategories ) ) ); } else { $postCategories = get_categories(); } foreach( $postCategories as $singleCat ) : $cat_name = $singleCat->name; $cat_count = $singleCat->count; $cat_slug = $singleCat->slug; $singlecat_id = $singleCat->cat_ID; $block_post = new WP_Query( array( 'category_name' => esc_html( $cat_slug ), 'posts_per_page' => 1, 'meta_query' => array( array( 'key' => '_thumbnail_id', 'compare' => 'EXISTS' ), ) ) ); if( $block_post->have_posts() ) : while( $block_post->have_posts() ) : $block_post->the_post(); $thumbnail_url = get_the_post_thumbnail_url( get_the_ID(), 'armonia-medium' ); endwhile; endif; ?>