public function replaceConstants($text, $constantPrefix = '{$coupon_', $userID) {
$constantPrefixLenght = strlen($constantPrefix);
$constantLenght = $constantPrefixLenght + 9;
$offset = 0;
while (($start = strpos($text, $constantPrefix, $offset)) !== false && strlen(substr($text, $start)) >= $constantLenght) {
$offset = $start + $constantLenght;
$couponConstant = substr($text, $start, $constantLenght);
$bannerID = substr($couponConstant, $constantPrefixLenght, -1);
try {
$couponBanner = $this->getCouponBanner($bannerID);
} catch (Gpf_Exception $e) {
continue;
}
foreach ($this->getCoupons($bannerID, $userID) as $couponData) {
$coupon = new Pap_Db_Coupon();
$coupon->fillFromRecord($couponData);
if ($constantPrefix == '{$coupon_') {
$couponText = $couponBanner->getCouponText($coupon);
$text = str_replace($couponConstant, $couponText, $text);
$offset = $start + strlen($couponText);
continue;
}
$text = str_replace($couponConstant, $coupon->getCode(), $text);
$offset = $start + strlen($coupon->getCode());
}
}
return $text;
}
