Chances are that you set up your Wordpress site using the One-Click Install, which takes care of creating a database and placing all the files needed by Wordpress into the right places. Unfortunately, the phpMyAdmin tool is not available for the automatically-created database. The good news is that almost always, the latest versions of Wordpress automatically update themselves and do a pretty good job of safely doing so.
One thing to check out is the 'Export' tool in Wordpress - you can find it under 'Tools' on the left-hand-side menu of the Admin page. This takes all of the content, settings, and files that are unique to your site and packages them up in a way that they can be brought back in using the 'Import' tool.
If you want to back up just the files directly, you can do so using FTP - please see our help page over [url]here[/url]. Usually, when you first connect, you'll see a folder called 'public_html', which will have folders inside it for each of the websites you have set up with Sonic. Making a copy is usually as easy as a 'drag-and-drop' operation onto your Desktop or folder on your computer.
Doing a full database backup without phpMyAdmin is a little more complicated, but there are Wordpress plugins like Duplicator
that make it really easy.
I hope the above was helpful for you, and please let me know if you have any questions.
-- Joe M.
Sonic System Operations