protected function doEvaluation(array $variableTable)
{
$variableTable += ['GLOBALS' => &$GLOBALS, '_SERVER' => &$_SERVER, '_ENV' => &$_ENV, '_REQUEST' => &$_REQUEST, '_GET' => &$_GET, '_POST' => &$_POST, '_COOKIE' => &$_COOKIE, '_SESSION' => &$_SESSION, '_FILES' => &$_FILES];
return $variableTable[$this->name];
}