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
其中之一:
$ip = $_SERVER['REMOTE_ADDR'];
$ip = $_SERVER['HTTP_CLIENT_IP'];
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
$ip = $_SERVER['HTTP_X_FORWARDED'];
$ip = $_SERVER['HTTP_FORWARDED_FOR'];
$ip = $_SERVER['HTTP_FORWARDED'];
其他回答
获取客户端IP地址,请使用getenv("REMOTE_ADDR")。
例如,
$ip_address = getenv("REMOTE_ADDR");
echo $ip_address;
如果你使用localhost调用你的服务器,它会输出::1。 因此,请使用直接服务器ip地址或域名调用您的服务器。
答案是使用$_SERVER变量。例如,$_SERVER["REMOTE_ADDR"]将返回客户端的IP地址。
我最喜欢的解决方案是Zend Framework 2使用的方式。它还考虑$_SERVER属性HTTP_X_FORWARDED_FOR, HTTP_CLIENT_IP, REMOTE_ADDR,但是它声明了一个类来设置一些可信代理,并且它返回一个IP地址而不是一个数组。我认为这是最接近它的解决方案:
class RemoteAddress
{
/**
* Whether to use proxy addresses or not.
*
* As default this setting is disabled - IP address is mostly needed to increase
* security. HTTP_* are not reliable since can easily be spoofed. It can be enabled
* just for more flexibility, but if user uses proxy to connect to trusted services
* it's his/her own risk, only reliable field for IP address is $_SERVER['REMOTE_ADDR'].
*
* @var bool
*/
protected $useProxy = false;
/**
* List of trusted proxy IP addresses
*
* @var array
*/
protected $trustedProxies = array();
/**
* HTTP header to introspect for proxies
*
* @var string
*/
protected $proxyHeader = 'HTTP_X_FORWARDED_FOR';
// [...]
/**
* Returns client IP address.
*
* @return string IP address.
*/
public function getIpAddress()
{
$ip = $this->getIpAddressFromProxy();
if ($ip) {
return $ip;
}
// direct IP address
if (isset($_SERVER['REMOTE_ADDR'])) {
return $_SERVER['REMOTE_ADDR'];
}
return '';
}
/**
* Attempt to get the IP address for a proxied client
*
* @see http://tools.ietf.org/html/draft-ietf-appsawg-http-forwarded-10#section-5.2
* @return false|string
*/
protected function getIpAddressFromProxy()
{
if (!$this->useProxy
|| (isset($_SERVER['REMOTE_ADDR']) && !in_array($_SERVER['REMOTE_ADDR'], $this->trustedProxies))
) {
return false;
}
$header = $this->proxyHeader;
if (!isset($_SERVER[$header]) || empty($_SERVER[$header])) {
return false;
}
// Extract IPs
$ips = explode(',', $_SERVER[$header]);
// trim, so we can compare against trusted proxies properly
$ips = array_map('trim', $ips);
// remove trusted proxy IPs
$ips = array_diff($ips, $this->trustedProxies);
// Any left?
if (empty($ips)) {
return false;
}
// Since we've removed any known, trusted proxy servers, the right-most
// address represents the first IP we do not know about -- i.e., we do
// not know if it is a proxy server, or a client. As such, we treat it
// as the originating IP.
// @see http://en.wikipedia.org/wiki/X-Forwarded-For
$ip = array_pop($ips);
return $ip;
}
// [...]
}
在这里查看完整代码: https://raw.githubusercontent.com/zendframework/zend-http/master/src/PhpEnvironment/RemoteAddress.php
它应该包含在$_SERVER['REMOTE_ADDR']变量中。
这是我使用的方法,它验证IPv4输入:
// Get user IP address
if ( isset($_SERVER['HTTP_CLIENT_IP']) && ! empty($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif ( isset($_SERVER['HTTP_X_FORWARDED_FOR']) && ! empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
$ip = (isset($_SERVER['REMOTE_ADDR'])) ? $_SERVER['REMOTE_ADDR'] : '0.0.0.0';
}
$ip = filter_var($ip, FILTER_VALIDATE_IP);
$ip = ($ip === false) ? '0.0.0.0' : $ip;