A Guide on Creating a Simple REST API in CodeIgniter

My friend published this guide on creating a REST API in CodeIgniter. Here is the process he followed:

• Installation of Codeigniter framework
  
• Database and table(s) creation
  
• Setup libraries and permissions
  
• Setup authentication and API key(s)
  
• Setup HTTP calls (GET, PUT, POST, DELETE)
  
• Test the HTTP calls.
  

You can create your own Rest API using this guide: https://www.cloudways.com/blog/rest-api-in-codeigniter/