Creating REST APIs in CodeIgniter

Creating REST APIs in CodeIgniter — a practical guide to CodeIgniter REST API with clear examples you can reuse in real projects.

CodeIgniter Tutorial Series (45/74). Prefer one article? Read the complete CodeIgniter tutorial.

Short description

REST APIs use HTTP verbs and JSON bodies/responses. Keep controllers focused on status codes and payloads.

API list endpoint

public function index()
{
    $posts = model('PostModel')->findAll();
    return $this->response->setJSON(['data' => $posts]);
}