301 redirect all urls containing a certain phrase

I want to redirect all urls that contain "videoplayer.swf" in them. A load of pages got generated automatically with this and I want to 30开发者_StackOverflow中文版1 them all to the homepage.

<?php
     if (preg_match ("videoplayer\.swf", $_SERVER['REQUEST_URI')) {
         header (...);
         exit;
     }
 ?>

Or, if you're using apache, here's a .htaccess:

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://www\.example\.com/.*$ [NC]
RewriteRule ^.*videoplayer\.swf.*$ http://www\.example\.com/ [R,NC]

Based on checking the referrer, so you can have something like that viewable, if accessed from your site.