codeigniter, 404 not found error - php

Question

I have a web site and I have installed CodeIgniter 2 Site under sub folder (test)
Users can access the site by using following link:
http://www.example.com/test/
When user is going to access (test) site using above link URL redirected to following link and following error will displayed.
http://www.example.com/test/login
Not Found
The requested URL /test/login was not found on this server.
Then I add index.php to the above URL, login page displayed.
http://www.example.com/test/index.php/login
When I submit my username and password again URL redirected to, without logged on.
http://www.example.com/test/login
And again, not found.
.htaccess:
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]
</IfModule>
config.php:
$config['base_url'] = '';
$config['index_page'] = '';
$config['uri_protocol'] = "AUTO" ;
I have tried $config['base_url'] = "http://www.example.com/test" - still not working.

Answer 1

in config/config.php
$config['base_url'] = 'https://stackoverflow.com/';
$config['index_page'] = '';
in .htaccess (place outside application folder)
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]
</IfModule>

Answer 2

replace .htaccess with this code
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]

Answer 3

try this in your .htaccess
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/system.*
RewriteRule ^(.*)$ index.php?/$1 [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.+)$ index.php?/$1 [L]