Recently when creating a tumblr style theme for wordpress I wanted include a source article link  in the wordpress post_type links linking back to the original article. When I was displaying the source link I wanted it to display only the sites root domain as the source rather than the full url of the article. This tutorial will teach you how to achieve this through a php function that you can easily place within your own themes functions.php file to get the same feature on your existing wordpress site.
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