bp_group_is_user_banned( BP_Groups_Group|bool $group = false, int $user_id )

function bp_group_is_user_banned( $group = false, $user_id = 0 ) {
	global $groups_template;

	// Site admins always have access.
	if ( bp_current_user_can( 'bp_moderate' ) ) {
		return false;
	}

	// Check groups loop first
	// @see BP_Groups_Group::get_group_extras().
	if ( ! empty( $groups_template->in_the_loop ) && isset( $groups_template->group->is_banned ) ) {
		$retval = $groups_template->group->is_banned;

	// Not in loop.
	} else {
		// Default to not banned.
		$retval = false;

		if ( empty( $group ) ) {
			$group = $groups_template->group;
		}

		if ( empty( $user_id ) ) {
			$user_id = bp_loggedin_user_id();
		}

		if ( ! empty( $user_id ) && ! empty( $group->id ) ) {
			$retval = groups_is_user_banned( $user_id, $group->id );
		}
	}

	/**
	 * Filters whether current user has been banned from current group in loop.
	 *
	 * @since BuddyPress 1.5.0
	 * @since BuddyPress 2.5.0 Added the `$group` parameter.
	 *
	 * @param bool   $is_invited If user has been from current group.
	 * @param object $group      Group object.
	 */
	return (bool) apply_filters( 'bp_group_is_user_banned', $retval, $group );
}