heres my .htaccess file

```
RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^(.*)$ index.php?url=$1 [NC,L] 

```

the index.php file is at the same depth as the .htaccess file but when I call 

```
$url = $_GET['url'];

```

in the index.php. there is a warning saying there is no index called url in the $\_GET superglobal.

Please help me