Codeigniter 3 – Fast setup

Download and extract codeigniter. In main folder create another folder named assets. There will be additional files for css, js and more.

Setup configuration files. Go to application/config:
– in autoload.php

$autoload['libraries'] = array('database','session');
$autoload['helper'] = array('url','form');

– in config.php

$config['base_url'] = 'http://www.example.com/';
$config['index_page'] = '';
$config['encryption_key'] = 'someEncryptionKey';
$config['sess_save_path'] = sys_get_temp_dir(); //Fix problems with session

– in database.php

'username' => 'root',
'password' => 'rootPassword',
'database' => 'DatabaseName',

– in routes.php

$route['default_controller'] = 'Main_controller';

Step 2 Create Main_controller file in application/controllers
Easiest way is to copy and rename Welcome.php

Step 3 Create .htaccess file in main folder. This is a must for routing!

RewriteEngine On

RewriteCond %{HTTP_HOST} ^my-domain.com [NC]
RewriteRule ^(.*)$ http://www.my-domain.com/$1 [L,R=301]

RewriteCond %{THE_REQUEST} ^[A-Z]+\ /index\.php(/[^\ ]*)?\ HTTP/
RewriteRule ^index\.php(/(.*))?$ http://www.my-domain.com/$2 [R=301,L]
 
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]