php 获取IP地址

php获得ip地址

方法一： <?php
function GetIP() {
    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！";
    }
    return $cip;
}

echo GetIP();
?>

方法二：

<?php
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;
?>

方法三：

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

方法四：

<?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
?>

方法五：

<?php
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();
?>

方法六：

<?php
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;
?>