Hotlink Protection is a Link Checking script
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The srcipt hotlink protection is a Link Checking script (website link checker).
I wrote these functions to keep my GD generated images from bieng hotlinked.
This was based on the idea that both the php script calling the image, and the image itself would have the same server time. If you try to use that script on a web site that uses multiple servers, it would be a good idea to sycnhronize their cpu clocks.
Date_filter is to be used in the script calling the php reosurce you want to protect.
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hotlink protection
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