Почему не выбирает из базы?

function connectdb() {
global $connect;
$connect = new mysqli("localhost", "root", "", "rr");
$connect->set_charset( 'utf8');
}

include "functions.php";
$db = connectdb();
$result = $db->query("SELECT id, date FROM table WHERE id = 1");

	while ($row = mysqli_fetch_assoc($result)){
	echo $row['date'];
	}