bp_groups_user_can_send_invites( int $group_id, int $user_id )

function bp_groups_user_can_send_invites( $group_id = 0, $user_id = 0 ) {
	$can_send_invites = false;
	$invite_status    = false;

	// If $user_id isn't specified, we check against the logged-in user.
	if ( ! $user_id ) {
		$user_id = bp_loggedin_user_id();
	}

	// If $group_id isn't specified, use existing one if available.
	if ( ! $group_id ) {
		$group_id = bp_get_current_group_id();
	}

	if ( $user_id ) {
		$can_send_invites = bp_user_can( $user_id, 'groups_send_invitation', array( 'group_id' => $group_id ) );
	}

	/**
	 * Filters whether a user can send invites in a group.
	 *
	 * @since BuddyPress 1.5.0
	 * @since BuddyPress 2.2.0 Added the $user_id parameter.
	 *
	 * @param bool $can_send_invites Whether the user can send invites
	 * @param int  $group_id         The group ID being checked
	 * @param bool $invite_status    The group's current invite status
	 * @param int  $user_id          The user ID being checked
	 */
	return apply_filters( 'bp_groups_user_can_send_invites', $can_send_invites, $group_id, $invite_status, $user_id );
}