先来了解一个变量的含义:
$_SERVER['REMOTE_ADDR']:浏览当前页面的用户计算机的ip地址
$_SERVER['HTTP_CLIENT_IP']:客户端的ip
$_SERVER['HTTP_X_FORWARDED_FOR']:浏览当前页面的用户计算机的网关
$_SERVER['HTTP_X_REAL_IP']:nginx 代理模式下,获取客户端真实IP
/**
* 获取客户端IP地址
*/
function real_ip()
{
$ip = $_SERVER['REMOTE_ADDR'];
if (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && preg_match_all('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s', $_SERVER['HTTP_X_FORWARDED_FOR'], $matches)) {
foreach ($matches[0] AS $xip) {
if (!preg_match('#^(10|172\.16|192\.168)\.#', $xip)) {
$ip = $xip;
break;
}
}
} elseif (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (isset($_SERVER['HTTP_CF_CONNECTING_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CF_CONNECTING_IP'])) {
$ip = $_SERVER['HTTP_CF_CONNECTING_IP'];
} elseif (isset($_SERVER['HTTP_X_REAL_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_X_REAL_IP'])) {
$ip = $_SERVER['HTTP_X_REAL_IP'];
}
return $ip;
}
总结
以上所述是小编给大家介绍的PHP 获取客户端 IP 地址的方法实例代码,希望对大家有所帮助,如果大家有任何疑问欢迎给我留言,小编会及时回复大家的!