How to detect client use network ipv6 or ipv4 in PHP [duplicate]

Question

I want use code php to check client use ipv6 or ipv4 network. But this function only return ipv4 address.

function getRealIpAddr() { if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet { $ip=$_SERVER['HTTP_CLIENT_IP']; } elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy { $ip=$_SERVER['HTTP_X_FORWARDED_FOR']; } else { $ip=$_SERVER['REMOTE_ADDR']; } return $ip; }

Please help me to detect client use ipv6! Thanks!

Possible duplicate of How to check if someone connected via IPv6 / IPv4 <- I would recommend looking at "Mukesh Chapagain"'s-answer. — M. Eriksson
– M. Eriksson, Commented Jan 20, 2019 at 15:12
There's also loads of other hits on this topic if you simply had googled on your title (which you always should do before posting a question). — M. Eriksson
– M. Eriksson, Commented Jan 20, 2019 at 15:16

Saurabh Sharma · Accepted Answer · 2019-01-20 14:27:15Z

-1

echo $_SERVER['REMOTE_ADDR'];

if you get ipv4 than client uses ipv4 else ipv6

answered Jan 20, 2019 at 14:27

Saurabh Sharma

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2 Comments

justcntt Over a year ago

I don't understand.

M. Eriksson Over a year ago

That's just for getting the IP (which the OP already does better than this example). The question is how to detect if the IP they're getting is an IPv4 or IPv6-address.

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