abstract public has (mixed $name) ...

abstract public getBestLanguage () ...

Source

abstract public getServer (mixed $name) ...

abstract public getHeader (mixed $header) ...

abstract public getQuery ([mixed $name], [mixed $filters], [mixed $defaultValue]) ...

abstract public getUserAgent () ...

abstract public getBestCharset () ...

abstract public isMethod (mixed $methods, [mixed $strict]) ...

abstract public getHTTPReferer () ...