The advantages, or benefits, of something are amazingly diverse. 

Here are some of the benefits of using the CodeIgniter framework:

1. There are no server prerequisites because CodeIgniter methods perform equally well on PHP 4 and 5, which is not the case with other frameworks, despite the fact that both servers are generally identical.

2. The key benefit is that it includes built-in libraries. The user can designate whomever they choose; everything from e-mail and calendar to unit testing is covered by the MVC framework.

3. Another useful feature is that the user may utilise the new database forging library to add or delete table fields, remove pre-existing ones, and even construct new tables.

4. According to a CodeIgniter report, there are currently over 58,895 registered users on the framework's forum. Because there are so many people from all over the world participating, the user's questions will be answered in only a few hours.

5. The combination of CodeIgniter and Expression Engine is one of the most crucial things that will happen shortly in this. The agreement between these two basically allows developers to utilise Expression Engine's libraries and other features. 

6. Apart from these benefits, there are a number of principles that you should learn from the Codeigniter Tutorial, which is the greatest source of information.

7. Users can adjust the security strength to meet the needs of their clients using this framework.