What limitations does PHP have in detecting user resolution?

PHP does not have built-in functions to detect the user's screen resolution directly. However, we can use JavaScript to get the screen resolution and pass it to PHP through a form submission or AJAX request. This way, PHP can access the resolution data and use it as needed. 

// HTML form with JavaScript to get screen resolution and submit to PHP
<form id="resolutionForm" method="post" action="process_resolution.php">
    <input type="hidden" name="screenWidth" id="screenWidth">
    <input type="hidden" name="screenHeight" id="screenHeight">
</form>

<script>
    document.getElementById('screenWidth').value = window.screen.width;
    document.getElementById('screenHeight').value = window.screen.height;
    document.getElementById('resolutionForm').submit();
</script>

Keywords

PHP user resolution limitations detection screen size

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