I got a hit today for the following search query: how do you get rid of the www in url. As you can see that hits on my article about removing PHPSESSID's, which isn't quite what the person was looking for I guess. Here's the code to 301 redirect the www version of your site

As regular readers of this blog might know I have written quite some tools using the different API's of search engines, and always found them quite useful. When I was implementing my sitewide search function, one of the things that bothered me that it was a bit slow. I knew that I had seen some

This one is just here for my own reference, because the default 302 status code just isn't good enough!
PHP 301 for Apache:
header("HTTP/1.1 301 Moved Permanently");
header("Location: http://www.example.com/newpage/");
exit;
PHP 301 for IIS:
header("Status: 301 Moved Permanently");
header("Location: http://www.example.com/newpage/");
exit;

Update: (Aug 4 2007) the stuff below is no longer necessary, all major search engines now treat underscores and dashes exactly the same, as word separators!
A year or so back, I was using underscores in my URL's on this site for spaces, and I decided to switch them to dashes, since several people, including

This query gives a result I hadn't seen before (image), the same page was indexed with both a single trailing forward slash, which is of course normal, and with a double trailing forward slash... This is of course a duplicate content issue, especially when people link to the double slash one by accident. The fix