Upgrade HTTP Responses

Documentations

• Output Class Documentation CodeIgniter 3.X

• HTTP Responses Documentation CodeIgniter 4.X

What has been changed

• The methods have been renamed

Upgrade Guide

1. The methods in the HTTP Responses class are named slightly different. The most important change in the naming is the switch from underscored method names to camelCase. The method set_content_type() from version 3 is now named setContentType() and so on.

2. In the most cases you have to change $this->output to $this->response followed by the method. You can find all methods here.

Code Example

CodeIgniter Version 3.x

<?php

$this->output->set_status_header(404);

// ...

$this->output
    ->set_content_type('application/json')
    ->set_output(json_encode(array('foo' => 'bar')));

CodeIgniter Version 4.x

<?php

$this->response->setStatusCode(404);

// ...

return $this->response->setJSON(['foo' => 'bar']);