How to setup mod_rewrite in server - php

Question

I have .htaccess file like this in my app. (only a sample for security)
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /app_folder/
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#'system' can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn't in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename 'application' to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]
</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.
# Submitted by: ElliotHaughin
ErrorDocument 404 /index.php
</IfModule>
in (Rewritebase /app_folder/) what will i put in the app_folder name if my app is in the server? should i put the hostname in the app_folder? for example
Rewritebase /http://example.com/
because my app_folder is now my webroot. I'm new in uploading my HMVC codeigniter setup in server using CentOS.

Answer 1

In Ubuntu(linux):
Run in terminal :
a2enmod rewrite
and then:
service apache2 restart
mod_rewrite will now be enabled!
In Windows(wamp)
You can manually edit the httpd.conf file
left click wampmanager -> Apache -> httpd.conf
This will open that file in notepad and you can locate the line
#LoadModule rewrite_module modules/mod_rewrite.so
and remove the comment symbol '#' to activate the module. Then save the file and restart Apache to activate this change.