MemberPress: Unsubscribed Memberships Shortcode

add_shortcode( 'mepr-unsubscribed-memberships', function () {

	$args = array(

		'post_type' => 'memberpressproduct',

		'post_status' => 'publish',

		'posts_per_page' => -1,

	);

	$memberships = new WP_Query( $args );

	ob_start();

	if ( $memberships->have_posts() ) {

		echo '<ul>';

		while ( $memberships->have_posts() ) {

			$memberships->the_post();

			$post_ID = get_the_ID();

			// Check if the user has an active subscription to the current Membership

			if ( current_user_can( 'mepr-active', "membership:{$post_ID}" ) ) {

				continue;

			}

			// If not, print an li item with membership title and link

			echo '<li><a href="' . esc_url( get_the_permalink() ) . '">' . esc_html( get_the_title() ) . '</a></li>';

		}

		echo '</ul>';

	}

	$output = ob_get_clean();

	return $output;

} );