Cannot enable mode rewrite - apache

Question

I want to use mod_rewrite with Wampserver to remove "/index.php/" from addressbar. This code is suggested with Codeigniter Framework:
RewriteEngine on
#RewriteBase /
RewriteCond $1 !^(index\.php|img|table-images|robots\.txt|css|fonts|js|uploads|dbg-wizard\.php)
RewriteRule ^(.*)$ index.php/$1 [L]
This should change this url:
mysite.local/contact_us
to this:
mysite.local/index.php/contact_us
This works with XAMPP but with Wampserver first URL generates Error 404!
I enabled mod_rewrite with Apache and there is no errors in error log.
Update:
I added .blabla in .htacess but nothing happened! It means that Apache does not read .htaccess! Why?
I added AllowOverride All to httpd-vhosts.conf.
Apache did not execute .htaccess and enabling AllowOverride in httpd.conf is not enough.
This is my httpd-vhosts.conf file:
<Directory E:\mysite\www>
Options Indexes FollowSymLinks Includes ExecCGI
#Order Deny,Allow
#Allow from all
AllowOverride All
Require all granted
</Directory>

Answer 1

To check that mode rewrite is working or not try these steps:
Make a folder in your root directory called htaccess_test
Create a .htaccess file, and put these code into this and save it.
options +FollowSymLinks RewriteEngine On
RewriteBase /htaccess_test/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([a-zA-Z0-9_-]+)/?$ user.php?u=$1
Create one more file called user.php and put these code into
this and save it.
<?php
if(isset($_GET['u'])){
echo $_GET['u'];
}
Now go to browser type http://localhost/htaccess_test/put_some_value_here.
If that is working than the problem is not in your apache setting.
Make sure you are editing the right .htaccess file. The .htaccess file you need to edit is in your projects' root folder, not in application or any other folder. And put these code
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /root_directory_of_your_project/
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]
</IfModule>