example_api.php

<?php

require(APPPATH.'/libraries/REST_Controller.php');

class Example_api extends REST_Controller {

    function user_get()
    {
        //$user = $this->some_model->getSomething( $this->get('id') );
        $user = array('id' => $this->get('id'), 'name' => 'Some Guy', 'email' => 'example@example.com');
        
        if($user)
        {
            $this->response($user, 200); // 200 being the HTTP response code
        }

        else
        {
            $this->response(NULL, 404);
        }
    }
    
    function user_delete()
    {
        //$this->some_model->deletesomething( $this->get('id') );
        $message = array('id' => $this->get('id'), 'message' => 'DELETED!');
        
        $this->response($message, 200); // 200 being the HTTP response code
    }
    
    function users_get()
    {
        //$users = $this->some_model->getSomething( $this->get('limit') );
        $users = array(
			array('id' => 1, 'name' => 'Some Guy', 'email' => 'example1@example.com'),
			array('id' => 2, 'name' => 'Person Face', 'email' => 'example2@example.com'),
			array('id' => 3, 'name' => 'Scotty', 'email' => 'example3@example.com'),
		);
        
        if($users)
        {
            $this->response($users, 200); // 200 being the HTTP response code
        }

        else
        {
            $this->response(NULL, 404);
        }
    }
}

?>