How to stop spammers from registering on my site?

You could try making ip address validation, it could help you make every registration unique. While the form submit, you could check with the other registered users' ip address and restrict multiple registration of the spammers from the same id, as they(spammers) usually make multiple ids and probably from a same computer.

You could try making ip address validation, it could help you make every registration unique. While the form submit, you could check with the other registered users' ip address and restrict multiple registration of the spammers from the same id, as they(spammers) usually make multiple ids and probably from a same computer. Useful source: php.net/manual/en/filter.examples.valida....

Nowadays it is highly common for different people/machines to have the same public IP because they are behind a NAT router; Not to mention that spammers can quite easily spoof their IP. Perhaps a combination of IP and user-agent string.. take a look at samy. Pl/evercookie – John J.

Camilleri Dec 9 at 9:20 Good to know, :) but I usually use ip address validation and yes, it reduces the spammers drastically. – Bala. C Dec 9 at 9:24 IP address validate will be blocking someone who is considered to be a spammer, even though he is not a spammer.

Simple way, use a captcha to avoid spam robots. – Zulkhaery Basrul Dec 9 at 9:51.

You should probably add some captcha to your registration form. Adding an anti cross site request forgery field also helps.

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