title: PHP Outgoing/External link
body: <p>Hi I'm looking to implement a similar feature to that seen on deviantART if a person clicks onto an external link: example: <a href="http://www.deviantart.com/users/outgoing?http://driz.co.uk/" rel="nofollow">http://www.deviantart.com/users/outgoing?http://driz.co.uk/</a></p>
  
  <p>What would be the best way of implementing such a feature? From the looks of it on dA they just edit all the external links to have the <code>http://www.deviantart.com/users/outgoing?</code> prefix and then show that page which allows them to visit the site or return. So perhaps I'd need someway of implementing a way to check which links are NOT on the current domain and then prefix them with a special url to show a stepping stone page.</p>
  
  <p>Or perhaps just appending the <code>rel="external"</code> to the links and then somehow for all links that have the rel tag of external go to page like that or perhaps show a dialog showing the same message.</p>
  
  <p>Cheers</p>