o_multisite_subdomain', is_subdomain_install() );
	}

	/**
	 * Returns if the current page is the login or register page.
	 *
	 * @since 4.2.1
	 *
	 * @return bool Login or register page.
	 */
	public function isWpLoginPage() {
		// We can't sanitize the filename using sanitize_file_name() here because it will cause issues with custom login pages and certain plugins/themes where this function is not defined.
		$self = ! empty( $_SERVER['PHP_SELF'] ) ? wp_unslash( $_SERVER['PHP_SELF'] ) : ''; // phpcs:ignore HM.Security.ValidatedSanitizedInput.InputNotSanitized
		if ( preg_match( '/wp-login\.php$|wp-register\.php$/', $self ) ) {
			return true;
		}

		return false;
	}

	/**
	 * Returns which type of WordPress page we're seeing.
	 * It will only work if {@see \WP_Query::$queried_object} has been set.
	 *
	 * @link https://developer.wordpress.org/themes/basics/template-hierarchy/#filter-hierarchy
	 *
	 * @since 4.2.8
	 *
	 * @return string|null The template type or `null` if no match.
	 */
	public function getTemplateType() {
		static $type = null;

		if ( ! empty( $type ) ) {
			return $type;
		}

		if ( is_attachment() ) {
			$type = 'attachment';
		} elseif ( is_single() ) {
			$type = 'single';
		} elseif (
			is_page() ||
			$this->isStaticPostsPage() ||
			$this->isWooCommerceShopPage()
		) {
			$type = 'page';
		} elseif ( is_author() ) { // An author page is an archive page, so it needs to be checked before `is_archive()`.
			$type = 'author';
		} elseif (
			is_tax() ||
			is_category() ||
			is_tag()
		) { // A taxonomy term page is an archive page, so it needs to be checked before `is_archive()`.
			$type = 'taxonomy';
		} elseif ( is_date() ) { // A date page is an archive page, so it needs to be checked before `is_archive()`.
			$type = 'date';
		} elseif ( is_archive() ) {
			$type = 'archive';
		} elseif ( is_home() && is_front_page() ) {
			$type = 'dynamic_home';
		} elseif ( is_search() ) {
			$type = 'search';
		}

		return $type;
	}

	/**
	 * Sets the given post as the queried object of the main query.
	 *
	 * @since 4.3.0
	 *
	 * @param  \WP_Post|int $wpPost The post object or ID.
	 * @return void
	 */
	public function setWpQueryPost( $wpPost ) {
		$wpPost = is_a( $wpPost, 'WP_Post' ) ? $wpPost : get_post( $wpPost );

		global $wp_query, $post;
		$this->originalQuery = $this->deepClone( $wp_query );
		$this->originalPost  = is_a( $post, 'WP_Post' ) ? $this->deepClone( $post ) : null;

		$wp_query->posts                 = [ $wpPost ];
		$wp_query->post                  = $wpPost;
		$wp_query->post_count            = 1;
		$wp_query->get_queried_object_id = (int) $wpPost->ID;
		$wp_query->queried_object        = $wpPost;
		$wp_query->is_single             = true;
		$wp_query->is_singular           = true;

		if ( 'page' === $wpPost->post_type ) {
			$wp_query->is_page = true;
		}

		$post = $wpPost;
	}

	/**
	 * Restores the main query back to the original query.
	 *
	 * @since 4.3.0
	 *
	 * @return void
	 */
	public function restoreWpQuery() {
		global $wp_query, $post;
		if ( is_a( $this->originalQuery, 'WP_Query' ) ) {
			// Loop over all properties and replace the ones that have changed.
			// We want to avoid replacing the entire object because it can cause issues with other plugins.
			foreach ( $this->originalQuery as $key => $value ) {
				if ( $value !== $wp_query->{$key} ) {
					$wp_query->{$key} = $value;
				}
			}
		}

		if ( is_a( $this->originalPost, 'WP_Post' ) ) {
			foreach ( $this->originalPost as $key => $value ) {
				if ( $value !== $post->{$key} ) {
					$post->{$key} = $value;
				}
			}
		}

		$this->originalQuery = null;
		$this->originalPost  = null;
	}

	/**
	 * Gets the list of theme features.
	 *
	 * @since 4.4.9
	 *
	 * @return array List of theme features.
	 */
	public function getThemeFeatures() {
		global $_wp_theme_features;

		return isset( $_wp_theme_features ) && is_array( $_wp_theme_features ) ? $_wp_theme_features : [];
	}

	/**
	 * Returns whether the active theme is a block-based theme or not.
	 *
	 * @since 4.5.3
	 *
	 * @return bool Whether the active theme is a block-based theme or not.
	 */
	public function isBlockTheme() {
		if ( function_exists( 'wp_is_block_theme' ) ) {
			return wp_is_block_theme(); // phpcs:ignore AIOSEO.WpFunctionUse.NewFunctions.wp_is_block_themeFound
		}

		return false;
	}

	/**
	 * Retrieves the website name.
	 *
	 * @since 4.6.1
	 *
	 * @return string The website name.
	 */
	public function getWebsiteName() {
		return aioseo()->options->searchAppearance->global->schema->websiteName
			? aioseo()->options->searchAppearance->global->schema->websiteName
			: aioseo()->helpers->decodeHtmlEntities( get_bloginfo( 'name' ) );
	}
}