A simple php class for logging in DirectAdmin panel and calling actions. It can easily extended to what you need, currently I have added only some methods for one of my projects.

1. login
2. domain_pointer_add (single domain)
3. domain_pointer_delete (single and multiple with comma separated domain names)
4. file_put (create new file or update existing file)
5. file_get (get contents of existing file)
6. web_usage_log (get usage log)
7. web_error_log (get error log)