(PECL pecl_http >= 0.22.0)
HttpQueryString::__construct — HttpQueryString constructor
Creates a new HttpQueryString object instance.
   Operates on and modifies $_GET and
   $_SERVER['QUERY_STRING'] if global is TRUE.
  
global
     whether to operate on $_GET and $_SERVER['QUERY_STRING']
add
     additional/initial query string parameters
Throws HttpRuntimeException.