在PHP中使用套接字编程获取客户端IP

Question

我正在使用PHP编写一个使用套接字库应用程序。我怎样才能获得客户的IP？感谢任何帮助

Answer 1

使用socket_getpeername

Answer 2

<?php
if ($_SERVER['HTTP_CLIENT_IP'])
    $visitorIP = $_SERVER['HTTP_CLIENT_IP'];
elseif ($_SERVER['HTTP_X_FORWARDED'])
    $visitorIP = $_SERVER['HTTP_X_FORWARDED'];
elseif ($_SERVER['HTTP_X_FORWARDED_FOR'])
    $visitorIP = $_SERVER['HTTP_X_FORWARDED_FOR'];
else
    $visitorIP = $_SERVER['REMOTE_ADDR'];

?>

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