Use SSL in OpenCart

Before use SSL, you have to make sure you already have SSL for your domain.

1. Open [config.php] and modify following:
define('HTTPS_SERVER', 'http://www.yourdomain.com/');
==> define('HTTPS_SERVER', 'https:// www.yourdomain.com /');
define('HTTPS_IMAGE', 'http://www.yourdomain.com/image/');
==> define('HTTPS_IMAGE', 'https://www.yourdomain.com/image/');

2. Open [config.php] under admin folder and modify following:
define('HTTPS_SERVER', 'http://www.yourdomain.com/admin/');
==> define('HTTPS_SERVER', 'https://www.yourdomain.com/admin/');
define('HTTPS_CATALOG', 'http://www.yourdomain.com/');
==> define('HTTPS_CATALOG', 'https://www.yourdomain.com/');

define('HTTPS_IMAGE', 'http://www.yourdomain.com/image/');
==> define('HTTPS_IMAGE', 'https://www.yourdomain.com/image/');


3. Select Use SSL at Administration
Login admin --> [System] --> [Settings] --> [Edit] --> [Server] --> [Use SSL] select [Yes] --> [Save]