What are the potential pitfalls of trying to restrict multiple clicks on a button without user authentication in PHP?

Potential pitfalls of trying to restrict multiple clicks on a button without user authentication in PHP include: 1. Users may still be able to bypass the restriction by manually sending multiple requests. 2. It may lead to a poor user experience if legitimate users are mistakenly blocked from performing actions. 3. Without proper authentication, it may be difficult to accurately track and manage the restriction. 

<?php
session_start();

if(!isset($_SESSION['clicked'])) {
    $_SESSION['clicked'] = true;
    
    // Code to handle button click action goes here
    
    // Redirect user to another page after button click
    header('Location: success_page.php');
    exit;
} else {
    // Display an error message or redirect to an error page
    echo "Button can only be clicked once.";
}
?>

Keywords

button multiple clicks user authentication PHP security

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