What potential pitfalls should be considered when awarding points or credits for banner clicks in PHP?

Potential pitfalls when awarding points or credits for banner clicks in PHP include the risk of click fraud, where users may artificially inflate clicks to earn more points. To mitigate this risk, you can implement measures such as tracking unique IP addresses or implementing CAPTCHA verification to ensure that clicks are legitimate. 

// Example code snippet for tracking unique IP addresses
$user_ip = $_SERVER['REMOTE_ADDR'];

// Check if the IP address has already clicked on the banner
if (!in_array($user_ip, $clicked_ips)) {
    // Award points or credits for the click
    $points += 1;
    
    // Add the IP address to the list of clicked IPs
    $clicked_ips[] = $user_ip;
}

Keywords

SQL injection XSS attacks session hijacking CSRF vulnerabilities data validation

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