browser.php
public function head($url, $parameters = false)
    {
        if (! is_object($url)) {
            $url = new SimpleUrl($url);
        }
        if ($this->getUrl()) {
            $url = $url->makeAbsolute($this->getUrl());
        }
        $response   = $this->user_agent->fetchResponse($url, new SimpleHeadEncoding($parameters));
        $this->page = new SimplePage($response);

        return ! $response->isError();
    }
public function head($url, $parameters = false)
    {
        if (! is_object($url)) {
            $url = new SimpleUrl($url);
        }
        if ($this->getUrl()) {
            $url = $url->makeAbsolute($this->getUrl());
        }
        $response   = $this->user_agent->fetchResponse($url, new SimpleHeadEncoding($parameters));
        $this->page = new SimplePage($response);

        return ! $response->isError();
    }
Fetches the page content with a HEAD request.
Will affect cookies, but will not change the base URL.

@param string/SimpleUrl $url                Target to fetch as string.
@param hash/SimpleHeadEncoding $parameters  Additional parameters for HEAD request.

@return bool                             True if successful.