CORS in CodeIgniter

CORS in CodeIgniter — a practical guide to CodeIgniter CORS with clear examples you can reuse in real projects.

CodeIgniter Tutorial Series (48/74). Prefer one article? Read the complete CodeIgniter tutorial.

Short description

Configure allowed origins/headers/methods carefully. Avoid `*` with credentials in production.

CORS headers example

return $this->response
    ->setHeader('Access-Control-Allow-Origin', 'http://localhost:5173')
    ->setHeader('Access-Control-Allow-Headers', 'Authorization, Content-Type')
    ->setHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');