NDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( LOGGED_IN_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );

		// Settings cookies.
		setcookie( 'wp-settings-' . get_current_user_id(), ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );
		setcookie( 'wp-settings-time-' . get_current_user_id(), ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH );

		// Old cookies.
		setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
		setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( SECURE_AUTH_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );

		// Even older cookies.
		setcookie( USER_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
		setcookie( USER_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );
		setcookie( PASS_COOKIE, ' ', time() - YEAR_IN_SECONDS, SITECOOKIEPATH, COOKIE_DOMAIN );

		// Post password cookie.
		setcookie( 'wp-postpass_' . COOKIEHASH, ' ', time() - YEAR_IN_SECONDS, COOKIEPATH, COOKIE_DOMAIN );
	}
endif;

if ( ! function_exists( 'is_user_logged_in' ) ) :
	/**
	 * Determines whether the current visitor is a logged in user.
	 *
	 * For more information on this and similar theme functions, check out
	 * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
	 * Conditional Tags} article in the Theme Developer Handbook.
	 *
	 * @since 2.0.0
	 *
	 * @return bool True if user is logged in, false if not logged in.
	 */
	function is_user_logged_in() {
		$user = wp_get_current_user();

		return $user->exists();
	}
endif;

if ( ! function_exists( 'auth_redirect' ) ) :
	/**
	 * Checks if a user is logged in, if not it redirects them to the login page.
	 *
	 * When this code is called from a page, it checks to see if the user viewing the page is logged in.
	 * If the user is not logged in, they are redirected to the login page. The user is redirected
	 * in such a way that, upon logging in, they will be sent directly to the page they were originally
	 * trying to access.
	 *
	 * @since 1.5.0
	 */
	function auth_redirect() {
		$secure = ( is_ssl() || force_ssl_admin() );

		/**
		 * Filters whether to use a secure authentication redirect.
		 *
		 * @since 3.1.0
		 *
		 * @param bool $secure Whether to use a secure authentication redirect. Default false.
		 */
		$secure = apply_filters( 'secure_auth_redirect', $secure );

		// If https is required and request is http, redirect.
		if ( $secure && ! is_ssl() && false !== strpos( $_SERVER['REQUEST_URI'], 'wp-admin' ) ) {
			if ( 0 === strpos( $_SERVER['REQUEST_URI'], 'http' ) ) {
				wp_redirect( set_url_scheme( $_SERVER['REQUEST_URI'], 'https' ) );
				exit;
			} else {
				wp_redirect( 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
				exit;
			}
		}

		/**
		 * Filters the authentication redirect scheme.
		 *
		 * @since 2.9.0
		 *
		 * @param string $scheme Authentication redirect scheme. Default empty.
		 */
		$scheme = apply_filters( 'auth_redirect_scheme', '' );

		$user_id = wp_validate_auth_cookie( '', $scheme );
		if ( $user_id ) {
			/**
			 * Fires before the authentication redirect.
			 *
			 * @since 2.8.0
			 *
			 * @param int $user_id User ID.
			 */
			do_action( 'auth_redirect', $user_id );

			// If the user wants ssl but the session is not ssl, redirect.
			if ( ! $secure && get_user_option( 'use_ssl', $user_id ) && false !== strpos( $_SERVER['REQUEST_URI'], 'wp-admin' ) ) {
				if ( 0 === strpos( $_SERVER['REQUEST_URI'], 'http' ) ) {
					wp_redirect( set_url_scheme( $_SERVER['REQUEST_URI'], 'https' ) );
					exit;
				} else {
					wp_redirect( 'https://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
					exit;
				}
			}

			return; // The cookie is good, so we're done.
		}

		// The cookie is no good, so force login.
		nocache_headers();

		$redirect = ( strpos( $_SERVER['REQUESTeturn bool Whether the style has been registered. True on success, false on failure.
 */
function wp_register_style( $handle, $src, $deps = array(), $ver = false, $media = 'all' ) {
	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );

	return wp_styles()->add( $handle, $src, $deps, $ver, $media );
}

/**
 * Removes a registered stylesheet.
 *
 * @see WP_Dependencies::remove()
 *
 * @since 2.1.0
 *
 * @param string $handle Name of the stylesheet to be removed.
 */
function wp_deregister_style( $handle ) {
	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );

	wp_styles()->remove( $handle );
}

/**
 * Enqueues a CSS stylesheet.
 *
 * Registers the style if source provided (does NOT overwrite) and enqueues.
 *
 * @see WP_Dependencies::add()
 * @see WP_Dependencies::enqueue()
 * @link https://www.w3.org/TR/CSS2/media.html#media-types List of CSS media types.
 *
 * @since 2.6.0
 *
 * @param string           $handle Name of the stylesheet. Should be unique.
 * @param string           $src    Full URL of the stylesheet, or path of the stylesheet relative to the WordPress root directory.
 *                                 Default empty.
 * @param string[]         $deps   Optional. An array of registered stylesheet handles this stylesheet depends on. Default empty array.
 * @param string|bool|null $ver    Optional. String specifying stylesheet version number, if it has one, which is added to the URL
 *                                 as a query string for cache busting purposes. If version is set to false, a version
 *                                 number is automatically added equal to current installed WordPress version.
 *                                 If set to null, no version is added.
 * @param string           $media  Optional. The media for which this stylesheet has been defined.
 *                                 Default 'all'. Accepts media types like 'all', 'print' and 'screen', or media queries like
 *                                 '(orientation: portrait)' and '(max-width: 640px)'.
 */
function wp_enqueue_style( $handle, $src = '', $deps = array(), $ver = false, $media = 'all' ) {
	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );

	$wp_styles = wp_styles();

	if ( $src ) {
		$_handle = explode( '?', $handle );
		$wp_styles->add( $_handle[0], $src, $deps, $ver, $media );
	}

	$wp_styles->enqueue( $handle );
}

/**
 * Removes a previously enqueued CSS stylesheet.
 *
 * @see WP_Dependencies::dequeue()
 *
 * @since 3.1.0
 *
 * @param string $handle Name of the stylesheet to be removed.
 */
function wp_dequeue_style( $handle ) {
	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );

	wp_styles()->dequeue( $handle );
}

/**
 * Checks whether a CSS stylesheet has been added to the queue.
 *
 * @since 2.8.0
 *
 * @param string $handle Name of the stylesheet.
 * @param string $status Optional. Status of the stylesheet to check. Default 'enqueued'.
 *                       Accepts 'enqueued', 'registered', 'queue', 'to_do', and 'done'.
 * @return bool Whether style is queued.
 */
function wp_style_is( $handle, $status = 'enqueued' ) {
	_wp_scripts_maybe_doing_it_wrong( __FUNCTION__, $handle );

	return (bool) wp_styles()->query( $handle, $status );
}

/**
 * Adds metadata to a CSS stylesheet.
 *
 * Works only if the stylesheet has already been registered.
 *
 * Possible values for $key and $value:
 * 'conditional' string      Comments for IE 6, lte IE 7 etc.
 * 'rtl'         bool|string To declare an RTL stylesheet.
 * 'suffix'      string      Optional suffix, used in combination with RTL.
 * 'alt'         bool        For rel="alternate stylesheet".
 * 'title'       string      For preferred/alternate stylesheets.
 * 'path'        string      The absolute path to a stylesheet. Stylesheet will
 *                           load inline when 'path' is set.
 *
 * @see WP_Dependencies::add_data()
 *
 * @since 3.6.0
 * @since 5.8.0 Added 'path' as an official value for $key.
 *              See {@see wp_maybe_inline_styles()}.
 *
 * @param string $handle Name of the stylesheet.
 * @param string $key    Name of data point for which we're storing a value.
 *                       Accepts 'conditional', 'rtl' and 'suffix', 'alt', 'title' and 'path'.
 * @param mixed  $value  String containing the CSS data to be added.
 * @return bool True on success, false on failure.
 */
function wp_style_add_data( $handle, $key, $value ) {
	return wp_styles()->add_data( $handle, $key, $value );
}