php获取客户端IP地址的几种方法-服务器专区

php获取客户端IP地址的几种方法

作者：网络 axgle 编辑： IT168 2006-03-10 00:00

【IT168 服务器学院】PHP Code one:

<?
$iipp=$_SERVER["REMOTE_ADDR"];
echo $iipp;
?>

PHP Code two:

<?php
$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];

echo $user_IP;
?>

///////////////////////////////////////////////

<?
function get_real_ip(){
$ip=false;
if(!empty($_SERVER["HTTP_CLIENT_IP"])){
  $ip = $_SERVER["HTTP_CLIENT_IP"];
}
if (!empty($_SERVER[''HTTP_X_FORWARDED_FOR''])) {
  $ips = explode (", ", $_SERVER[''HTTP_X_FORWARDED_FOR'']);
  if ($ip) { array_unshift($ips, $ip); $ip = FALSE; }
  for ($i = 0; $i < count($ips); $i++) {
   if (!eregi ("^(10|172\.16|192\.168)\.", $ips[$i])) {
    $ip = $ips[$i];
    break;
   }
  }
}
return ($ip ? $ip : $_SERVER[''REMOTE_ADDR'']);
}

echo get_real_ip();
?>

PHP Code three:

<?
//php获取ip的算法
if ($HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"])
{
$ip = $HTTP_SERVER_VARS["HTTP_X_FORWARDED_FOR"];
}
elseif ($HTTP_SERVER_VARS["HTTP_CLIENT_IP"])
{
$ip = $HTTP_SERVER_VARS["HTTP_CLIENT_IP"];
}
elseif ($HTTP_SERVER_VARS["REMOTE_ADDR"])
{
$ip = $HTTP_SERVER_VARS["REMOTE_ADDR"];
}
elseif (getenv("HTTP_X_FORWARDED_FOR"))
{
$ip = getenv("HTTP_X_FORWARDED_FOR");
}
elseif (getenv("HTTP_CLIENT_IP"))
{
$ip = getenv("HTTP_CLIENT_IP");
}
elseif (getenv("REMOTE_ADDR"))
{
$ip = getenv("REMOTE_ADDR");
}
else
{
$ip = "Unknown";
}
echo "你的IP:".$ip ;
?>

PHP Code four:

<?
if(getenv(''HTTP_CLIENT_IP'')) {
$onlineip = getenv(''HTTP_CLIENT_IP'');
} elseif(getenv(''HTTP_X_FORWARDED_FOR'')) {
$onlineip = getenv(''HTTP_X_FORWARDED_FOR'');
} elseif(getenv(''REMOTE_ADDR'')) {
$onlineip = getenv(''REMOTE_ADDR'');
} else {
$onlineip = $HTTP_SERVER_VARS[''REMOTE_ADDR''];
}
echo $onlineip;
?>

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