Indicates an error during check for PHP unicode support. File core/lib/Drupal/Component/Utility/Unicode

public static Unicode::strtoupper($text) Converts

public static NestedArray::unsetValue(array &$array, array $parents,

ThemeRegistry::initializeRegistry() Initializes

The renderer service. Type:

public static UrlHelper::isExternal($path) Determines

All attributes that may contain URIs. The attributes 'code' and 'codebase' are omitted, because they only exist for the <applet>

The list of HTML tags allowed by filterAdmin(). Type:

Provides a class which generates a link with route names and parameters. Hierarchy class

public static Unicode::strlen($text) Counts