php - 如何在php中获取IP地址

Question

我在 Windows 7 操作系统上安装了 Apache 服务器 2.2.22、Php 5.4.5 和 Mysql 5.5.27。每件事都运作良好。但我没有得到IP地址。这是我的IP地址收集代码

<?php

//Test if it is a shared client
if (!empty($_SERVER['HTTP_CLIENT_IP'])) 
{
    $ip = $_SERVER['HTTP_CLIENT_IP'];
    //Is it a proxy address
} 
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) 
{
    $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} 
else 
{
    $ip = $_SERVER['REMOTE_ADDR'];
}
//The value of $ip at this point would look something like: "192.0.34.166"
$ip = ip2long($ip);

任何人都可以帮助我如何获得IP地址。我是否需要更改或修改 Apache httpd.conf 或 php.ini 文件来解决此问题。

Answer 1

获取用户IP地址的简单方法

<?PHP

function getUserIP()
{
    $client  = @$_SERVER['HTTP_CLIENT_IP'];
    $forward = @$_SERVER['HTTP_X_FORWARDED_FOR'];
    $remote  = $_SERVER['REMOTE_ADDR'];

    if(filter_var($client, FILTER_VALIDATE_IP))
    {
        $ip = $client;
    }
    elseif(filter_var($forward, FILTER_VALIDATE_IP))
    {
        $ip = $forward;
    }
    else
    {
        $ip = $remote;
    }

    return $ip;
}


$user_ip = getUserIP();

echo $user_ip; // Output IP address [Ex: 177.87.193.134]


?>

Answer 2

您可以获取服务器 IP，$_SERVER['SERVER_ADDR']并将$_SERVER['REMOTE_ADDR']返回用户正在查看的 IP 地址。