Download a pdf only after answering a question - how?

  • motionmountain
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  • motionmountain
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Post 3+ Months Ago

My site, http://www.motionmountain.net, gives away a free physics textbook in pdf form. It is 100 MB long, because of its many figures and films. I now have a problem with bots, which eat much of the bandwidth.
How can I program a webpage in such a way that the pdf can be downloaded only after a question is answered? E.g. "what is the letter used as symbol for the speed of light?"

Any help or advice would be greatly appreciated!

Mm
  • Anonymous
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Post 3+ Months Ago

  • spork
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  • Loc: Seattle, WA

Post 3+ Months Ago

Please don't post your question in multiple forums -- use your original:

programming-forum/how-use-php-allow-pdf-download-only-after-user-input-t94261.html

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