Getting the screen resolution using PHP

Question

I need to find the screen resolution of a users screen who visits my website?

Answer 1

Here is the Javascript Code: (index.php)

Here is the PHP Code: (sqldb.php)

$data = $_POST['screensize'];
$pdo = new PDO('mysql:host=localhost;dbname=test', 'username', 'password');
$statement = $pdo->prepare("UPDATE users SET screen= :screen WHERE id = $userid");
$statement->execute(array('screen' => $data));

I hope that you know how to get the $userid from the Session, and for that you need an Database with the Table called users, and an Table inside users called screen ;=) Regards KSP