How to Check URL is Secure or Not in amazon EC2 Server in PHP / Codeigniter SSL

You can use following code for  Check URL is Secure or Not in amazon EC2 Server

if ($_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https') {
      $_SERVER['HTTPS'] = 'on';
} else {
      $_SERVER['HTTPS'] = 'off';
}