I have a php script that dynamically creates a png image. That image can be used on other sites. Is there any way to detect where my image is used in this php script?
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Yes you can use the $_SERVER['HTTP_REFERER'] to see the referrer of the request.
smistry
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__Note:__ This [isn't always available](http://stackoverflow.com/questions/6880659/in-what-cases-will-http-referer-be-empty). – naththedeveloper Apr 07 '14 at 08:49