original_string: public static function getParameterFromQueryString($urlQuery, $parameter)
      {
          $nameToValue = self::getArrayFromQueryString($urlQuery);
  
          if (isset($nameToValue[$parameter])) {
              return $nameToValue[$parameter];
          }
          return null;
      }
code: public static function getParameterFromQueryString($urlQuery, $parameter)
      {
          $nameToValue = self::getArrayFromQueryString($urlQuery);
  
          if (isset($nameToValue[$parameter])) {
              return $nameToValue[$parameter];
          }
          return null;
      }
code_tokens: public static function getParameterFromQueryString ( $ urlQuery , $ parameter ) { $ nameToValue = self :: getArrayFromQueryString ( $ urlQuery ) ; if ( isset ( $ nameToValue [ $ parameter ] ) ) { return $ nameToValue [ $ parameter ] ; } return null ; }
docstring: Returns the value of a single query parameter from the supplied query string.
  
  @param string $urlQuery The query string.
  @param string $parameter The query parameter name to return.
  @return string|null Parameter value if found (can be the empty string!), null if not found.
  @api
docstring_tokens: Returns the value of a single query parameter from the supplied query string .