What are the potential pitfalls of using PHP to handle user consent for cookies and advertisements?

Potential pitfalls of using PHP to handle user consent for cookies and advertisements include the risk of not properly obtaining explicit consent from users, potential security vulnerabilities if not implemented securely, and the complexity of managing user preferences over time. 

<?php
// Check if user has given consent for cookies
$cookie_consent = isset($_COOKIE['cookie_consent']) ? $_COOKIE['cookie_consent'] : '';

// If user has not given consent, display cookie consent banner
if ($cookie_consent !== 'true') {
    echo '<div class="cookie-banner">This website uses cookies. <a href="/cookie-policy">Learn more</a> <button onclick="giveConsent()">I consent</button></div>';
}

// Function to set cookie consent
function setCookieConsent() {
    setcookie('cookie_consent', 'true', time() + 86400 * 30, '/');
}

// Function to handle user consent
if (isset($_POST['consent'])) {
    setCookieConsent();
    header('Location: ' . $_SERVER['REQUEST_URI']);
    exit;
}
?>

Keywords

GDPR cookies advertisements user consent data privacy

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