Error 404 Page .htaccess setup

Two methods that I use:

1. This just redirects the user to a specified page if the resource they are looking for isn’t found. Add this to your htaccess file to redirect to a file called /404.php:

   ErrorDocument /404.php

2. This actually rewrites the URL so that the user is not redirected. Instead, Apache shows the same URL but essentially maps it to the /404.php file. You can see this in action here:http://www.rlmseo.com/missingblahblah/.Add this to your htaccess file:

   RewriteEngine On
   RewriteBase /
   RewriteCond %{REQUEST_URI} !-d
   RewriteCond %{REQUEST_URI} !-f
   RewriteRule ^(.*)$ /404.php [L]

   The “RewriteBase /” part is optional and depends on your setup.

   This tells Apache to check if the requested resource is a directory, then check if it’s a file, and if both of those are false, map the current URL to /404.php.