function increasePoints($points, $mysqli, $user_check) {

	$result = mysqli_query($mysqli,"SELECT rewardPoints FROM users WHERE username = '$user_check'");
	$item = mysqli_fetch_assoc($result);
	$currentPoints = $item['rewardPoints'];


	$newPoints = $currentPoints + $points;

	$sqlupdate = "UPDATE users SET rewardPoints = '.$newPoints.' WHERE username = '$user_check' ";
	mysqli_query($mysqli, $sqlupdate);

	echo "<p>you have ".$newPoints."</p>";



}

?>