php获取访问者真实ip地址代码
php获取访问者真实ip地址代码function ip(){
foreach (array(
'HTTP_CLIENT_IP',
'HTTP_X_FORWARDED_FOR',
'HTTP_X_FORWARDED',
'HTTP_X_CLUSTER_CLIENT_IP',
'HTTP_FORWARDED_FOR',
'HTTP_FORWARDED',
'REMOTE_ADDR') as $key) {
if (array_key_exists($key, $_SERVER)) {
foreach (explode(',', $_SERVER[$key]) as $ip) {
$ip = trim($ip);
//会过滤掉保留地址和私有地址段的IP，例如 127.0.0.1会被过滤
//也可以修改成正则验证IP
if ((bool) filter_var($ip, FILTER_VALIDATE_IP,
FILTER_FLAG_IPV4 |
FILTER_FLAG_NO_PRIV_RANGE |
FILTER_FLAG_NO_RES_RANGE)) {
return $ip;
}
}
}
}
return null;
}在需要的地方引用ip()即可
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