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Apr 21, 2009, 05:20 #1SitePoint Evangelist
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Enter the numbers below to prevent spam
Hi,
I have seen many site asking users/ visitors to enter a certain type of numbers before submitting a form to prevent spam attackers.
How does it work actually? Does it really effective? Or is there any other better solutions to avoid spam attacks?
I am trying to look for tutorial or code to write this part for my blog but still can't find any resources yet...
Please let me know if u have any ideas.
Many thanks,
Lau
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Apr 21, 2009, 05:29 #2Twitter: @AnthonySterling
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The phrase you're looking to search against is Captcha.
@AnthonySterling: I'm a PHP developer, a consultant for oopnorth.com and the organiser of @phpne, a PHP User Group covering the North-East of England.
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Apr 21, 2009, 06:45 #3SitePoint Addict
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and yes it dramatically reduces spam. there are ways around it but the common spammer doesnt have access to them.
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