function groups_accept_all_pending_membership_requests( $group_id = 0 ) {
	if ( ! $group_id ) {
		$group_id = bp_get_current_group_id();
	}

	$user_ids = groups_get_membership_requested_user_ids( $group_id );

	if ( ! $user_ids ) {
		return false;
	}

	foreach ( (array) $user_ids as $user_id ) {
		groups_accept_membership_request( false, $user_id, $group_id );
	}

	/**
	 * Fires after the acceptance of all pending membership requests to a group.
	 *
	 * @since 1.0.2
	 *
	 * @param int $group_id ID of the group whose pending memberships were accepted.
	 */
	do_action( 'groups_accept_all_pending_membership_requests', $group_id );

	return true;
}