public function conect() { if (is_null(self::$db)) { try { self::$db = new PDO(DRIVE . ':Server=' . HOST . ';Database=' . BANCO . '', '' . USER . '', '' . PASS . ''); self::$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); } catch (PDOException $e) { echo "Erro ao conectar. Motivo: " . $e->getMessage(); } } return self::$db; }