public function searchAdvertisements($advertisementSearchParameters, $dbConnection = null) { $advertisementsList = null; $preparedStatement = null; try { $advertisementSearchQuery = null; $advertisementIDQuery = null; if ($dbConnection == null) { $dbConnection = DatabaseUtilities::getDatabaseConnection(); } $advertisementIDQuery = "SELECT DISTINCT AD.ADVERTISEMENT_ID FROM advertisement AD WHERE 1 = 1"; $advertisementIDQuery .= AdvertisementSearchDao::getAdvertisementSearchWhereClause($advertisementSearchParameters); $advertisementSearchQuery = AdvertisementSearchDao::ADVERTISEMENT_SEARCH_SELECT; $advertisementSearchQuery .= " AND AD.ADVERTISEMENT_ID IN (" . $advertisementIDQuery . ")\n\t\t\t\t\t\t\t\t\t\t\t\tORDER BY AD.CREATED_DATE DESC\n\t\t\t\t\t\t\t\t\t\t\t\tLIMIT :pagingAmount OFFSET :startingPoint"; $preparedStatement = AdvertisementSearchDao::getAdvertisementSearchPreparedStatement($advertisementSearchQuery, $advertisementSearchParameters, $dbConnection); //Add paging parameters. $startingPoint = 0; $currentPage = $advertisementSearchParameters->getVariable(SearchConstants::CURRENT_PAGE_ID); $pagingAmount = $advertisementSearchParameters->getVariable(SearchConstants::PAGING_AMOUNT_ID); if ($currentPage > 1) { $startingPoint = ($currentPage - 1) * $pagingAmount; } $pagingAmount = (int) $pagingAmount; $startingPoint = (int) $startingPoint; $preparedStatement->bindParam(":pagingAmount", $pagingAmount, PDO::PARAM_INT); $preparedStatement->bindParam(":startingPoint", $startingPoint, PDO::PARAM_INT); $preparedStatement->execute(); while ($result = $preparedStatement->fetch()) { $advertisement = AdvertisementSearchDao::extractAdvertisementSearchObject($result); if ($advertisement !== null) { $advertisementsList[] = $advertisement; } } $preparedStatement = null; } catch (Exception $ex) { echo $ex->getMessage(); $advertisementsList = null; } $preparedStatement = null; return $advertisementsList; }