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php获取访问者IP地址汇总

//方法1：

$ip = $_SERVER["REMOTE_ADDR"];
echo $ip;

//方法2：

复制代码 代码如下:

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

//方法3：

function getRealIp()
{
  $ip=false;
  if(!empty($_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 getRealIp();

//方法4：

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 $ip ;

//方法5：

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;

//方法6：

print "您的IP地址是：";


if(!empty($_SERVER["HTTP_CLIENT_IP"])){
 $cip = $_SERVER["HTTP_CLIENT_IP"];
}
elseif(!empty($_SERVER["HTTP_X_FORWARDED_FOR"])){
 $cip = $_SERVER["HTTP_X_FORWARDED_FOR"];
}
elseif(!empty($_SERVER["REMOTE_ADDR"])){
 $cip = $_SERVER["REMOTE_ADDR"];
}
else{
 $cip = "无法获取！";
}
print $cip;

以上所述就是本文的全部内容了，希望对大家学习php能够有所帮助 。