public function get_enrollments( $post_type = 'course', $args = array() ) {

		global $wpdb;

		$args = wp_parse_args(
			$args,
			array(
				'limit'   => 20,
				'orderby' => 'upm.updated_date',
				'order'   => 'DESC',
				'skip'    => 0,
				'status'  => 'any', // Any, enrolled, cancelled, expired.
			)
		);

		// Prefix membership.
		if ( 'membership' === $post_type ) {
			$post_type = 'llms_membership';
		}

		// Sanitize order & orderby.
		$args['orderby'] = preg_replace( '/[^a-zA-Z_.]/', '', $args['orderby'] );
		$args['order']   = preg_replace( '/[^a-zA-Z_.]/', '', $args['order'] );

		// Allow "short" orderby's to be passed in without a table reference.
		switch ( $args['orderby'] ) {
			case 'date':
				$args['orderby'] = 'upm.updated_date';
				break;
			case 'order':
				$args['orderby'] = 'p.menu_order';
				break;
			case 'title':
				$args['orderby'] = 'p.post_title';
				break;
		}

		// Prepare additional status AND clauses.
		if ( 'any' !== $args['status'] ) {
			$status = $wpdb->prepare(
				"
				AND upm.meta_value = %s
				AND upm.updated_date = (
					SELECT MAX( upm2.updated_date )
					  FROM {$wpdb->prefix}lifterlms_user_postmeta AS upm2
					 WHERE upm2.meta_key = '_status'
					   AND upm2.user_id = %d
					   AND upm2.post_id = upm.post_id
					)",
				$args['status'],
				$this->get_id()
			);
		} else {
			$status = '';
		}

		$from_where = "FROM {$wpdb->prefix}lifterlms_user_postmeta AS upm
			 JOIN {$wpdb->posts} AS p ON p.ID = upm.post_id
			 WHERE p.post_type = %s
			   AND p.post_status = 'publish'
			   AND upm.meta_key = '_status'
			   AND upm.user_id = %d
			   {$status}";

		$prepare_args = array( $post_type, $this->get_id() );

		// phpcs:disable WordPress.DB.PreparedSQL.InterpolatedNotPrepared
		$found = absint(
			$wpdb->get_var(
				$wpdb->prepare(
					"SELECT COUNT(DISTINCT upm.post_id) {$from_where}",
					$prepare_args
				)
			)
		); // db call ok; no-cache ok.

		$query = $wpdb->get_results(
			$wpdb->prepare(
				"SELECT DISTINCT upm.post_id AS id
			 {$from_where}
			 ORDER BY {$args['orderby']} {$args['order']}
			 LIMIT %d, %d;
			",
				array_merge(
					$prepare_args,
					array( $args['skip'], $args['limit'] )
				)
			),
			'OBJECT_K'
		); // db call ok; no-cache ok.
		// phpcs:enable WordPress.DB.PreparedSQL.InterpolatedNotPrepared

		return array(
			'found'   => $found,
			'limit'   => $args['limit'],
			'more'    => ( $found > ( ( $args['skip'] / $args['limit'] + 1 ) * $args['limit'] ) ),
			'skip'    => $args['skip'],
			'results' => array_keys( $query ),
		);
	}