groups_accept_all_pending_membership_requests( int $group_id )

function groups_accept_all_pending_membership_requests( $group_id ) {
	$user_ids = BP_Groups_Member::get_all_membership_request_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 BuddyPress 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;
}