protected function addExtraFieldInternal($extraField, $condition, $refValue)
{
$extraFieldParams = array($extraField, $condition, $refValue);
if (in_array($extraFieldParams, $this->_extraFields)) {
return;
}
// already added
$this->_extraFields[] = $extraFieldParams;
if ($extraField != self::ECF_REFERRER || self::$_usesHttpReferrer) {
self::$_hasExtraFields = true;
}
$this->addExtraFieldsToCacheParams($extraField, $condition, $refValue);
}
