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I have two subdomains pointing to the same index.php3. How can I find out which subdomain was entered by the user?

Aug 17th, 2000 16:48
Kelson Vibber, Kaspar Althaus,

Use the HTTP Host variable (in PHP, this shows up as $HTTP_HOST).  
That'll tell you whether the user is looking at site1.mydomain.com or 
site2.mydomain.com (or even www.myotherdomain.com).