Direct echo in Controller - bad parctice?

or use output class 

http://www.codeigniter.com/userguide3/li...set_output

http://php.net/manual/fr/json.constants.php

PHP Code:

$response = array('status' => 'OK');

$this->output
        ->set_status_header(200)
        ->set_content_type('application/json', 'utf-8')
        ->set_output(json_encode($response, JSON_PRETTY_PRINT | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES))
        ->_display();
exit; 


result : 

Code:

{
   "status": "OK"
}