［转］PHP获取IP地址

源代码： PHP获取IP的方法有许多种，br /今天向大家总结了六种方法。 br / PHP获取IP方法一： ?php function GetIP() { if(!empty($_SERVER[HTTP_CLIENT_IP])) $cip = $_SERVER[HTTP_CLIENT_IP]; else if(!empty($_SERVER[HTTP_X_FORWARDED_FOR])) $cip = $_

源代码：

PHP获取IP的方法有许多种，
今天向大家总结了六种方法。

PHP获取IP方法一：
function GetIP() {
    if(!empty($_SERVER["HTTP_CLIENT_IP"]))
       $cip = $_SERVER["HTTP_CLIENT_IP"];
    else if(!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))    
       $cip = $_SERVER["HTTP_X_FORWARDED_FOR"];
    else if(!empty($_SERVER["REMOTE_ADDR"]))   
       $cip = $_SERVER["REMOTE_ADDR"];
    else  
       $cip = "无法获取！";
    return $cip;
}
echo GetIP();
?>

PHP获取IP方法二：

error_reporting (E_ERROR | E_WARNING | E_PARSE);
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;
?>

PHP获取IP方法三：
$iipp = $_SERVER["REMOTE_ADDR"]; echo $iipp; ?>

PHP获取IP方法四：
$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];
echo $user_IP;
?>

PHP获取IP方法五：

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         {
            if (!eregi ("^(10|172/.16|192/.168)/.", $ips[$i]))
            {
                $ip = $ips[$i];
                break;
            }
        }
    }
    return ($ip ? $ip : $_SERVER['REMOTE_ADDR']);
}
echo get_real_ip();
?>

PHP获取IP方法六：

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;
?>