I've been working on a website lately. It's a pretty small one and most of the content is just entered in html. However, I need one section where the owner can post things. I know how to accomplish this in php, but I'm not sure about how the owner will have access on this "administrator" mode.
Should I build an administrator page where there are options like, "Post new article" or "upload a file"? If so, I must give him this specific link and username and passwords, because he won't be able to navigate to the admin page from the official one. How is this usually done?