CodeIgniter 4.3.1 setup or installation without composer. Here we will see the complete setup of CodeIgniter 4 in localhost or hosting server without using composer.

STEP 1:

Download CodeIgniter 4 from the official site.

Extract the zip on your root folder and you will get a folder structure like given below:

STEP 2:

Copy ‘index.php‘ and ‘.htaccess‘ from ‘public’ folder to root folder.

STEP 3:

Open ‘index.php‘ from root folder and change

require FCPATH . ‘../app/Config/Paths.php’; 

to

require FCPATH . ‘/app/Config/Paths.php’;

(Just remove ‘..’ before app/)

STEP 4:

Open app/Config/App.php and set your baseURL

e.g. public string $baseURL = ‘http://localhost/ci4/’;

STEP 5:

Create .env file and paste from env file.

STEP 6:

Open .env file and set CI_ENVIRONMENT from production to development and remove # to enable. e.g.

# CI_ENVIRONMENT = production

to

CI_ENVIRONMENT = development

STEP 7:

1. open .htaccess file from root folder
2. Paste below code on top of .htaccess page.
   
   RewriteEngine On RewriteCond %{HTTPS} !=on RewriteCond %{THE_REQUEST} /public/([^\s?]*) [NC] RewriteRule ^ %1 [L,NE,R=302] RewriteRule ^((?!public/).*)$ public/$1 [L,NC]

   1 2 3 4 5

   RewriteEngine On RewriteCond %{HTTPS} !=on RewriteCond %{THE_REQUEST} /public/([^\s?]*) [NC] RewriteRule ^ %1 [L,NE,R=302] RewriteRule ^((?!public/).*)$ public/$1 [L,NC]

   
    

Setup is ready on localhost, same folder will run on hosting server but you have to change base url in app/Config/App.php as given in STEP 4.