What are the limitations of using PHP for real-time file upload progress tracking?

One limitation of using PHP for real-time file upload progress tracking is that PHP is a server-side language, so it cannot provide real-time updates to the client without additional techniques such as polling or using WebSocket. To solve this issue, you can implement a combination of PHP for handling the file upload and a client-side technology like JavaScript or AJAX to provide real-time progress updates to the user. 

// PHP code for handling file upload progress tracking
if ($_SERVER['REQUEST_METHOD'] == 'POST' && !empty($_FILES['file'])) {
    $file = $_FILES['file'];
    
    // Process file upload here
    
    // Send progress updates to client using AJAX or WebSocket
}

Keywords

PHP file upload progress tracking limitations real-time

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