How can sessions be effectively utilized to ensure that each visitor click is only recorded once on a PHP website?

To ensure that each visitor click is only recorded once on a PHP website, sessions can be effectively utilized by storing a flag in the session data to track whether the click has already been recorded for the current visitor. When a visitor clicks on a link or button, the PHP code can check this flag in the session data. If the flag is not set, the click can be recorded and the flag can be set to prevent duplicate recordings.

session_start();

if (!isset($_SESSION['click_recorded'])) {
    // Record the click
    $_SESSION['click_recorded'] = true;
    
    // Your click recording logic here
}