BP_Signup::add_backcompat( string $user_login = '', string $user_password = '', string $user_email = '', array $usermeta = array() )

	public static function add_backcompat( $user_login = '', $user_password = '', $user_email = '', $usermeta = array() ) {
		global $wpdb;

		$user_id = wp_insert_user( array(
			'user_login'   => $user_login,
			'user_pass'    => $user_password,
			'display_name' => sanitize_title( $user_login ),
			'user_email'   => $user_email
		) );

		if ( is_wp_error( $user_id ) || empty( $user_id ) ) {
			return $user_id;
		}

		// Update the user status to '2', ie "not activated"
		// (0 = active, 1 = spam, 2 = not active).
		$wpdb->query( $wpdb->prepare( "UPDATE {$wpdb->users} SET user_status = 2 WHERE ID = %d", $user_id ) );

		// WordPress creates these options automatically on
		// wp_insert_user(), but we delete them so that inactive
		// signups don't appear in various user counts.
		delete_user_option( $user_id, 'capabilities' );
		delete_user_option( $user_id, 'user_level'   );

		// Set any profile data.
		if ( bp_is_active( 'xprofile' ) ) {
			if ( ! empty( $usermeta['profile_field_ids'] ) ) {
				$profile_field_ids = explode( ',', $usermeta['profile_field_ids'] );

				foreach ( (array) $profile_field_ids as $field_id ) {
					if ( empty( $usermeta["field_{$field_id}"] ) ) {
						continue;
					}

					$current_field = $usermeta["field_{$field_id}"];
					xprofile_set_field_data( $field_id, $user_id, $current_field );

					/*
					 * Save the visibility level.
					 *
					 * Use the field's default visibility if not present, and 'public' if a
					 * default visibility is not defined.
					 */
					$key = "field_{$field_id}_visibility";
					if ( isset( $usermeta[ $key ] ) ) {
						$visibility_level = $usermeta[ $key ];
					} else {
						$vfield           = xprofile_get_field( $field_id );
						$visibility_level = isset( $vfield->default_visibility ) ? $vfield->default_visibility : 'public';
					}
					xprofile_set_field_visibility_level( $field_id, $user_id, $visibility_level );
				}
			}
		}

		/**
		 * Filters the user ID for the backcompat functionality.
		 *
		 * @since BuddyPress 2.0.0
		 *
		 * @param int $user_id User ID being registered.
		 */
		return apply_filters( 'bp_core_signups_add_backcompat', $user_id );
	}