[Phpug] Help with PHP script

[ghooton]

Hello all,
Attached is a php script.
I do not know any PHP. 
When I connect to the site which is running this scrip over SSL
I get hotlink.png instead of the thumbnails

If anyone can help me (or help me to help myself ) to understand 
what this script is doing I would be grateful.
I see references to  // SSL check and hotlink.png in the script.

How can I see what values vars like $type are set to, can I have them
written to a log file ?

Regards
-- 
Gerard Hooton.
Department of Microelectronic Engineering U.C.C.
Butler Building,
Enterprise Centre,
North Mall.
Cork.

Tel: +353 21 4904576
Fax: +353 21 4904573
http://www.ue.ucc.ie/