function groups_send_invites( $args = array() ) {
	// Backward compatibility with old method of passing arguments.
	if ( ! is_array( $args ) || func_num_args() > 1 ) {
		_deprecated_argument( __METHOD__, '5.0.0', sprintf( __( 'Arguments passed to %1$s should be in an associative array. See the inline documentation at %2$s for more details.', 'buddypress' ), __METHOD__, __FILE__ ) );

		$old_args_keys = array(
			0 => 'inviter_id',
			1 => 'group_id',
		);

		$args = bp_core_parse_args_array( $old_args_keys, func_get_args() );
	}

	$r = bp_parse_args( $args, array(
		'user_id'       => false,
		'invitee_email' => '',
		'group_id'      => 0,
		'inviter_id'    => bp_loggedin_user_id(),
		'force_resend'  => false,
	), 'groups_send_invitation' );


	$args = array(
		'user_id'       => $r['user_id'],
		'invitee_email' => $r['invitee_email'],
		'item_id'       => $r['group_id'],
		'inviter_id'    => $r['inviter_id'],
	);

	/*
	 * We will generally only want to fetch unsent invitations.
	 * If force_resend is true, then we need to fetch both sent and draft invites.
	 */
	if ( $r['force_resend'] ) {
		$args['invite_sent'] = 'all';
	} else {
		$args['invite_sent'] = 'draft';
	}

	$invites = groups_get_invites( $args );

	$invited_users = array();

	$invites_class = new BP_Groups_Invitation_Manager();
	foreach ( $invites as $invite ) {
		$invited_users[] = $invite->user_id;
		$invites_class->send_invitation_by_id( $invite->id );
	}

	/**
	 * Fires after the sending of invites for a group.
	 *
	 * @since 1.0.0
	 * @since 2.5.0 Added $user_id to passed parameters.
	 *
	 * @param int   $group_id      ID of the group who's being invited to.
	 * @param array $invited_users Array of users being invited to the group.
	 * @param int   $user_id       ID of the inviting user.
	 */
	do_action( 'groups_send_invites', $r['group_id'], $invited_users, $r['inviter_id'] );
}