public static function getInstance() { if (!self::$dm) { self::$dm = new self(); } return self::$dm; }
<?php include_once "../database/lingerie-database-manager.php"; include_once "apriori-association-keyword-recommender.php"; $dm = LingerieDatabaseManager::getInstance(); $recommender = new AprioriAssociationKeywordRecommender($dm); $recommender->preprocess();