conn = null; try { $this->conn = new PDO("mysql:host=" . $this->host . ";dbname=" . $this->db_name, $this->username, $this->password, array(PDO::ATTR_PERSISTENT => true, PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8")); } catch (PDOException $exception) { echo "Connection error: " . $exception->getMessage(); } return $this->conn; } }