Apache .htaccess: mod_rewrite (local, snow leopard)

gistfile1.txt

<IfModule mod_rewrite.c>
    Options +FollowSymLinks
    RewriteEngine On
    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.

    ErrorDocument 404 /index.php
</IfModule>

Enables mod_rewrite for localhost (on Snow Leopard).

To use:
If your site is in /Users/your-username/Sites/mysite:

Save this file as .htaccess in /Users/your-username/Sites/mysite.

Also, make sure you have edited your username.conf file:
Open Terminal
type: cd /etc/apache2/your-username-goes-here/users/
sudo nano your-username-goes-here.conf

See https://gist.github.com/2141039