function setsCookie($cookieName, $cookieValue, $days = 365) {
        $expiryTime = time() + ($days * 24 * 60 * 60);
        
        // Detect HTTPS even behind proxies/Cloudflare
        $isSecure = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on') || 
                    (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') || 
                    $_SERVER['SERVER_PORT'] == 443;
    
        setcookie($cookieName, $cookieValue, [
            'expires' => $expiryTime,
            'path' => '/',
            'secure' => $isSecure,
            'httponly' => true,
            'samesite' => 'Lax',
        ]);
    }
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