如何使用PHP获取客户端IP地址?
我想通过他/她的IP地址登录到我的网站的用户的记录。
如何使用PHP获取客户端IP地址?
我想通过他/她的IP地址登录到我的网站的用户的记录。
当前回答
下面是一个很好的获取用户IP地址的干净代码示例。
$ip = $_SERVER['HTTP_CLIENT_IP']
? $_SERVER['HTTP_CLIENT_IP']
: ($_SERVER['HTTP_X_FORWARDED_FOR']
? $_SERVER['HTTP_X_FORWARDED_FOR']
: $_SERVER['REMOTE_ADDR']);
下面是一个使用elvis操作符的简短版本:
$_SERVER['HTTP_CLIENT_IP']
? : ($_SERVER['HTTP_X_FORWARDED_FOR']
? : $_SERVER['REMOTE_ADDR']);
下面是一个使用isset删除通知的版本(谢谢你,@shasi kanth):
$ip = isset($_SERVER['HTTP_CLIENT_IP'])
? $_SERVER['HTTP_CLIENT_IP']
: (isset($_SERVER['HTTP_X_FORWARDED_FOR'])
? $_SERVER['HTTP_X_FORWARDED_FOR']
: $_SERVER['REMOTE_ADDR']);
其他回答
这里有一个简单的一行代码
$ip = $_SERVER['HTTP_X_FORWARDED_FOR']?: $_SERVER['HTTP_CLIENT_IP']?: $_SERVER['REMOTE_ADDR'];
编辑:
上面的代码可能会返回保留地址(如10.0.0.1),所有代理服务器的地址列表,等等。 要处理这些情况,请使用以下代码:
function valid_ip($ip) {
// for list of reserved IP addresses, see https://en.wikipedia.org/wiki/Reserved_IP_addresses
return $ip && substr($ip, 0, 4) != '127.' && substr($ip, 0, 4) != '127.' && substr($ip, 0, 3) != '10.' && substr($ip, 0, 2) != '0.' ? $ip : false;
}
function get_client_ip() {
// using explode to get only client ip from list of forwarders. see https://en.wikipedia.org/wiki/X-Forwarded-For
return
@$_SERVER['HTTP_X_FORWARDED_FOR'] ? explode(',', $_SERVER['HTTP_X_FORWARDED_FOR'], 2)[0] :
@$_SERVER['HTTP_CLIENT_IP'] ? explode(',', $_SERVER['HTTP_CLIENT_IP'], 2)[0] :
valid_ip(@$_SERVER['REMOTE_ADDR']) ?:
'UNKNOWN';
}
echo get_client_ip();
如果您不喜欢使用If -else/switch语句,那么下面的解决方案适合您。
function get_client_ip()
{
$fields = array(
'HTTP_CF_CONNECTING_IP',
'HTTP_X_SUCURI_CLIENTIP',
'HTTP_CLIENT_IP',
'HTTP_X_FORWARDED_FOR',
'HTTP_X_FORWARDED',
'HTTP_FORWARDED_FOR',
'HTTP_FORWARDED',
'REMOTE_ADDR',
// more custom fields
);
foreach ($fields as $ip_field) {
if (!empty($_SERVER[$ip_field])) {
return $_SERVER[$ip_field];
}
}
return null;
}
我使用了其他答案之一,并添加了一些额外的东西,如CloudFlare代理和NGINX代理检测。
/**
* Gets, validates and returns the connecting client's IP
*/
function getClientIP(){
// Get real visitor IP behind CloudFlare network
if (!empty($_SERVER["HTTP_CF_CONNECTING_IP"]) && validateIP($_SERVER['HTTP_CF_CONNECTING_IP'])) {
return $_SERVER["HTTP_CF_CONNECTING_IP"];
}
// Get real visitor IP behind NGINX proxy - https://easyengine.io/tutorials/nginx/forwarding-visitors-real-ip/
if (!empty($_SERVER["HTTP_X_REAL_IP"]) && validateIP($_SERVER['HTTP_X_REAL_IP'])) {
return $_SERVER["HTTP_X_REAL_IP"];
}
// Check for shared Internet/ISP IP
if (!empty($_SERVER['HTTP_CLIENT_IP']) && validateIP($_SERVER['HTTP_CLIENT_IP'])) {
return $_SERVER['HTTP_CLIENT_IP'];
}
// Check for IP addresses passing through proxies
if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
// Check if multiple IP addresses exist in var
if (strpos($_SERVER['HTTP_X_FORWARDED_FOR'], ',') !== false) {
$iplist = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
foreach ($iplist as $ip) {
if (validateIP($ip))
return $ip;
}
}
else {
if (validateIP($_SERVER['HTTP_X_FORWARDED_FOR']))
return $_SERVER['HTTP_X_FORWARDED_FOR'];
}
}
if (!empty($_SERVER['HTTP_X_FORWARDED']) && validateIP($_SERVER['HTTP_X_FORWARDED']))
return $_SERVER['HTTP_X_FORWARDED'];
if (!empty($_SERVER['HTTP_X_CLUSTER_CLIENT_IP']) && validateIP($_SERVER['HTTP_X_CLUSTER_CLIENT_IP']))
return $_SERVER['HTTP_X_CLUSTER_CLIENT_IP'];
if (!empty($_SERVER['HTTP_FORWARDED_FOR']) && validateIP($_SERVER['HTTP_FORWARDED_FOR']))
return $_SERVER['HTTP_FORWARDED_FOR'];
if (!empty($_SERVER['HTTP_FORWARDED']) && validateIP($_SERVER['HTTP_FORWARDED']))
return $_SERVER['HTTP_FORWARDED'];
// Return unreliable IP address since all else failed
return $_SERVER['REMOTE_ADDR'];
}
/**
* Ensures an IP address is both a valid IP address and does not fall within
* a private network range.
*/
function validateIP($ip) {
if (strtolower($ip) === 'unknown')
return false;
// Generate IPv4 network address
$ip = ip2long($ip);
// Do additional filtering on IP
if(!filter_var($ip, FILTER_VALIDATE_IP))
return false;
// If the IP address is set and not equivalent to 255.255.255.255
if ($ip !== false && $ip !== -1) {
// Make sure to get unsigned long representation of IP address
// due to discrepancies between 32 and 64 bit OSes and
// signed numbers (ints default to signed in PHP)
$ip = sprintf('%u', $ip);
// Do private network range checking
if ($ip >= 0 && $ip <= 50331647)
return false;
if ($ip >= 167772160 && $ip <= 184549375)
return false;
if ($ip >= 2130706432 && $ip <= 2147483647)
return false;
if ($ip >= 2851995648 && $ip <= 2852061183)
return false;
if ($ip >= 2886729728 && $ip <= 2887778303)
return false;
if ($ip >= 3221225984 && $ip <= 3221226239)
return false;
if ($ip >= 3232235520 && $ip <= 3232301055)
return false;
if ($ip >= 4294967040)
return false;
}
return true;
}
我在生产节点中使用它,它工作得很好。由于大部分代码来自这里,我已经在GNU @ https://github.com/d3vdigital/whatsmyip-node下发布了一个节点
获取客户端IP地址,请使用getenv("REMOTE_ADDR")。
例如,
$ip_address = getenv("REMOTE_ADDR");
echo $ip_address;
如果你使用localhost调用你的服务器,它会输出::1。 因此,请使用直接服务器ip地址或域名调用您的服务器。
正如所有其他人所说,你可以使用$_SERVER['REMOTE_ADDR'];获取客户端IP地址。
另外,如果你需要一个用户的更多信息,你可以使用这个:
<?php
$ip = '0.0.0.0';
$ip = $_SERVER['REMOTE_ADDR'];
$clientDetails = json_decode(file_get_contents("http://ipinfo.io/$ip/json"));
echo "You're logged in from: <b>" . $clientDetails->country . "</b>";
?>
客户端更具体的信息放在$clientDetails中。 $clientDetails->PostalCode/hostname/region/loc…
我用的是ipinfo。IO来获取额外的信息。