What are some alternative methods to cookies for tracking user behavior, specifically downloads, in a PHP script?

One alternative method to tracking user behavior, specifically downloads, in a PHP script is by using session variables. You can store information about the download in a session variable when the user initiates the download, and then retrieve and process this information on subsequent pages. This method does not rely on cookies and can be a viable option for tracking user behavior.

// Start the session
session_start();

// Store download information in a session variable
$_SESSION['download_info'] = [
    'file_name' => 'example_file.pdf',
    'download_time' => time(),
    'user_id' => 123
];

// Retrieve and process download information on subsequent pages
if(isset($_SESSION['download_info'])) {
    $download_info = $_SESSION['download_info'];
    
    // Process the download information as needed
    echo 'File downloaded: ' . $download_info['file_name'];
}