bp_invites_member_invite_mark_register_user( $user_id )

function bp_invites_member_invite_mark_register_user( $user_id ) {
	global $bp;

	$allow_custom_registration = bp_allow_custom_registration();
	if ( ! $allow_custom_registration ) {
	    return;
	}

	$email = bp_core_get_user_email( $user_id );

	$inviters = array();

	$args = array(
		'post_type'      => bp_get_invite_post_type(),
		'posts_per_page' => -1,
		'meta_query'     => array(
			array(
				'key'     => '_bp_invitee_email',
				'value'   => $email,
				'compare' => '=',
			),
		),
	);

	$bp_get_invitee_email = new WP_Query( $args );

	if ( $bp_get_invitee_email->have_posts() ) {

		// From the posts returned by the query, get a list of unique inviters
		while ( $bp_get_invitee_email->have_posts() ) {
			$bp_get_invitee_email->the_post();

			$inviter_id = get_the_author_meta( 'ID' );
			$inviters[] = $inviter_id;

			// Mark as accepted
			update_post_meta( get_the_ID(), '_bp_invitee_status', 1 );
			update_post_meta( get_the_ID(), '_bp_invitee_registered_date', date( 'Y-m-d H:i:s' ) );

			$member_type = get_post_meta( get_the_ID(), '_bp_invitee_member_type', true );
			if ( isset( $member_type ) && ! empty( $member_type ) ) {
				bp_set_member_type( $user_id, '' );
				bp_set_member_type( $user_id, $member_type );

				$member_type_id                = bp_member_type_post_by_type( $member_type );
				$selected_member_type_wp_roles = get_post_meta( $member_type_id, '_bp_member_type_wp_roles', true );

				if ( isset( $selected_member_type_wp_roles[0] ) && 'none' !== $selected_member_type_wp_roles[0] ) {
					$bp_user = new WP_User( $user_id );
					foreach ( $bp_user->roles as $role ) {
						// Remove role
						$bp_user->remove_role( $role );
					}
					// Add role
					$bp_user->add_role( $selected_member_type_wp_roles[0] );
				}
			}

			$post_id = get_the_ID();

			/**
			 * Fires after invitee registered.
			 *
			 * @param int $user_id    Invitee user id.
			 * @param int $inviter_id Inviter user id.
			 * @param int $post_id 	  Invitation id.
			 *
			 * @since BuddyBoss 1.4.7
			 */
			do_action( 'bp_invites_member_invite_mark_register_user', $user_id, $inviter_id, $post_id );
		}
	}

}