'astro_widget', 'description' => 'Displays a image from NASA Astronomy Picture of the Day', ); parent::__construct( 'astro_widget', 'Astronomy Daily', $widget_ops ); } /** * Outputs the content of the widget * * @param array $args * @param array $instance */ public function widget( $args, $instance ) { // outputs the content of the widget echo $args['before_widget']; if ( ! empty( $instance['title'] ) ) { echo $args['before_title'] . apply_filters( 'widget_title', $instance['title'] ). $args['after_title']; } $count = $instance['count']; $size = $instance['size']; $args = array( 'posts_per_page' => $count, 'post_type' => 'astro', 'orderby' => 'date' ); $astro = get_posts( $args ); foreach ($astro as $post) { ?> ID, $size ); ?>

post_title; ?>

How to register new image size? Visit this link

$value ) { $updated_instance[$key] = sanitize_text_field($value); } return $updated_instance; } }