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Editorial Team
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Asked: 2026-05-21T04:32:22+00:00

Of all these functions that return current visitors info/ip only the first one seems

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Of all these functions that return current visitors info/ip only the first one seems to output:

echo $_SERVER["REMOTE_ADDR"];

echo $_SERVER["HTTP_X_FORWARDED"];
echo $_SERVER["HTTP_X_CLUSTER_CLIENT_IP"];
echo $_SERVER["HTTP_FORWARDED_FOR"];
echo $_SERVER["HTTP_FORWARDED"];

Primary Question: Why the other functions dont output anything?

Bonus Question: Are there any other cool functions in this regard for example a function that outputs the visitors used browser & platform?? Also usefull would be to get the visitors city, favourite beverage, favourite color in #RGB… 🙂 Thanks for any suggestions!

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1 Answer

  1. Editorial Team
    1. It’s not functions but array members.
    2. It’s not IP address they output but HTTP headers (Note HTTP_ in them)
    3. The only one contains IP address is $_SERVER["REMOTE_ADDR"]

    Why the other functions dont output anything?

    Because these HTTP headers are optional.

    Are there any other cool functions

    Sure

    print_r($_SERVER);

    will show you them all

    Note get_browser() function which helps you to get more structured info out of User-Agent header.

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