php - how can I get Real IP? -


i have developed website. used $_server variable find ip of client. when internet connection refreshed, shows different ip. how can real ip client can register 1 account 1 computer?

unfortunately there no way guarantee 1 computer (or user) ever register 1 account. if majority of users have fixed ip address, people set out break system find ways connect site via different routes checks don't realise same people each time.

you design system require valid email address, reduce amount of tampering, won't stop determined person registering several accounts on site using disposable email addresses.


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