What is the limitation of using PHP to determine the resolution of a user's computer?

One limitation of using PHP to determine the resolution of a user's computer is that PHP runs on the server side and does not have direct access to client-side information like screen resolution. To overcome this limitation, you can use JavaScript to gather the screen resolution on the client side and then pass that information to the server using AJAX. 

```php
// PHP code to handle AJAX request for screen resolution
if(isset($_POST['screenWidth']) && isset($_POST['screenHeight'])){
    $screenWidth = $_POST['screenWidth'];
    $screenHeight = $_POST['screenHeight'];
    
    // Process the screen resolution data as needed
}
```

This PHP code snippet demonstrates how to handle an AJAX request from a client-side JavaScript script that sends the screen resolution data to the server for further processing.

Keywords

PHP resolution limitation screen detection

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