Tutorial básico para fazer um deploy de um projeto Codeigniter PHP, ou projeto PHP usando o padrão MVC com PDO.

1. Alterar arquivo no diretorio path: app/Config/App.php

Alterar string $baseUrl (apontar para o dominio do seu site).

2. Alterar arquivo no diretorio path: app/Config/Database.php

Alterar array $default username, password, database.

3. Incluir arquivo .htaccess na raiz do projeto

RewriteEngine On   
RewriteCond %{HTTPS} !=on   
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]  

RewriteOptions inherit   
RewriteEngine on   
Header set content-Security-Policy: upgrade-insecure-requests

# php -- BEGIN cPanel-generated handler, do not edit
# Defina o pacote “ea-php81” como a linguagem padrão de programação “PHP”.
<IfModule mime_module>
  AddHandler application/x-httpd-ea-php81___lsphp .php .php8 .phtml
</IfModule>
# php -- END cPanel-generated handler, do not edit

4. Incluir arquivo .htaccess na pasta public do projeto

# Disable directory browsing
Options -Indexes

# ----------------------------------------------------------------------
# Rewrite engine
# ----------------------------------------------------------------------

# Turning on the rewrite engine is necessary for the following rules and features.
# FollowSymLinks must be enabled for this to work.
<IfModule mod_rewrite.c>
	Options +FollowSymlinks
	RewriteEngine On

	# If you installed CodeIgniter in a subfolder, you will need to
	# change the following line to match the subfolder you need.
	# http://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewritebase
	# RewriteBase /

	# Redirect Trailing Slashes...
	RewriteCond %{REQUEST_FILENAME} !-d
	RewriteCond %{REQUEST_URI} (.+)/$
	RewriteRule ^ %1 [L,R=301]

	# Rewrite "www.example.com -> example.com"
	RewriteCond %{HTTPS} !=on
	RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
	RewriteRule ^ http://%1%{REQUEST_URI} [R=301,L]

	# Checks to see if the user is attempting to access a valid file,
	# such as an image or css document, if this isn't true it sends the
	# request to the front controller, index.php
	RewriteCond %{REQUEST_FILENAME} !-f
	RewriteCond %{REQUEST_FILENAME} !-d
	RewriteRule ^([\s\S]*)$ index.php/$1 [L,NC,QSA]

	# Ensure Authorization header is passed along
	RewriteCond %{HTTP:Authorization} .
	RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
</IfModule>

<IfModule !mod_rewrite.c>
	# If we don't have mod_rewrite installed, all 404's
	# can be sent to index.php, and everything works as normal.
	ErrorDocument 404 index.php
</IfModule>

# Disable server signature start
	ServerSignature Off
# Disable server signature end