array("event", "page", "souvenir", "breve", "attachment"), // Specify the post type you want to update, e.g., 'post', 'events', 'books' // 'post_type' => 'attachment', 'numberposts' => -1, 'post_status' => 'any', 'meta_query' => array( 'relation' => 'AND', array( 'key' => 'decoded', 'value' => '', 'compare' => '!=', ), array( 'key' => 'decoded_msg', 'value' => '', 'compare' => '!=', ), ), ); $all_posts = get_posts( $args ); echo '

Posts with meta fields : ' . print_r(sizeof($all_posts), true) . '

'; } }