Inorder to change the domain name in Opencart we may need to amend two config files.
First one is in the root folder(/home/$user/public_html/config.php) and the other is in the /admin folder.
You can access the those config.php files either via cPanel filemanager or of course you can use any of the FTP clients to access it.
// HTTP
define(
'HTTP_SERVER'
,
'https://www.example.com/'
);
define(
'HTTP_IMAGE'
,
'https://www.example.com/image/'
);
define(
'HTTP_ADMIN'
,
'https://www.example.com/admin/'
);
// HTTPS
define(
'HTTPS_SERVER'
,
'httpss://www.example.com/'
);
define(
'HTTPS_IMAGE'
,
'httpss://www.example.com/image/'
);
Check that the file “/admin/config.php” is writeable (permission 644), open and via “code editor” edit the following lines:
// HTTP
define(
'HTTP_SERVER'
,
'https://www.example.com/admin/'
);
define(
'HTTP_CATALOG'
,
'https://www.example.com/'
);
define(
'HTTP_IMAGE'
,
'https://www.example.com/image/'
);
// HTTPS
define(
'HTTPS_SERVER'
,
'httpss://www.example.com/admin/'
);
define(
'HTTPS_CATALOG'
,
'httpss://www.example.com/'
);
define(
'HTTPS_IMAGE'
,
'httpss://www.example.com/image/'
);