Is it possible to determine window size with PHP?

To determine the window size in PHP, you can use client-side scripting languages like JavaScript. PHP is a server-side language and does not have direct access to client-side information like window size. You can use JavaScript to get the window size and then pass that information to PHP using AJAX. 

// PHP code to handle AJAX request
if(isset($_POST['windowWidth']) && isset($_POST['windowHeight'])) {
    $windowWidth = $_POST['windowWidth'];
    $windowHeight = $_POST['windowHeight'];
    
    // Use window width and height as needed
}
```

```javascript
// JavaScript code to get window size and send it to PHP
var windowWidth = window.innerWidth;
var windowHeight = window.innerHeight;

var xhr = new XMLHttpRequest();
xhr.open('POST', 'your_php_script.php', true);
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
xhr.send('windowWidth=' + windowWidth + '&windowHeight=' + windowHeight);

Keywords

PHP window size client-side JavaScript viewport dimensions

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