Get wishlist products for default user wishlist or by ID or SHAREKEY

functions.php

if ( ! function_exists( 'tinvwl_get_wishlist_products' ) ) {
	/**
	 * Get wishlist products for default user wishlist or by ID or SHAREKEY
	 *
	 * @param int $wishlist_id by ID or SHAREKEY, 0 = default wishlist of current user
	 *
	 * @return array|bool
	 */
	function tinvwl_get_wishlist_products( $wishlist_id = 0 ) {
		$wishlist = tinv_wishlist_get( $wishlist_id );
		if ( empty( $wishlist ) ) {
			return false;
		}
		$wlp      = new TInvWL_Product( $wishlist );
		$products = $wlp->get_wishlist();

		if ( empty( $products ) ) {
			return false;
		}

		return $products;
	}
}