public static Unicode::caseFlip($matches) Flip

Provides user agent related utility functions. Hierarchy class \Drupal\Component\Utility\

Provides helpers for dealing with variables. Hierarchy class \Drupal\Component\Utility\

public static UrlHelper::buildQuery(array $query, $parent = '')

Drupal placeholder/token replacement system. API functions for replacing placeholders in text with meaningful values. For

public static Html::load($html) Parses an HTML

public ToStringTrait::__toString() Implements

The number of bytes in a kilobyte. See also

public static NestedArray::filter(array $array, callable $callable = NULL)

public UnroutedUrlAssembler::__construct(RequestStack $request_stack