获取客户端IP，然后从中获取城市名称[重复]

Question

在这里，当他单击我页面上的登录按钮时，我试图获取用户的 IP。我想最终从IP中得到city的名字。

function get_client_ip() {
     $ipaddress = '';
     if ($_SERVER['HTTP_CLIENT_IP'])
         $ipaddress = $_SERVER['HTTP_CLIENT_IP'];
     else if($_SERVER['HTTP_X_FORWARDED_FOR'])
         $ipaddress = $_SERVER['HTTP_X_FORWARDED_FOR'];
     else if($_SERVER['HTTP_X_FORWARDED'])
         $ipaddress = $_SERVER['HTTP_X_FORWARDED'];
     else if($_SERVER['HTTP_FORWARDED_FOR'])
         $ipaddress = $_SERVER['HTTP_FORWARDED_FOR'];
     else if($_SERVER['HTTP_FORWARDED'])
         $ipaddress = $_SERVER['HTTP_FORWARDED'];
     else if($_SERVER['REMOTE_ADDR'])
         $ipaddress = $_SERVER['REMOTE_ADDR'];
     else
         $ipaddress = 'UNKNOWN';

     return $ipaddress; 
}

除了上述之外，还有什么更好更快的方法吗？

然后得到城市，

$ip = get_client_ip();
$details = json_decode(file_get_contents("http://ipinfo.io/{$ip}"));
echo $details->city;

Answer 1

<?php
require_once("userip/ip.codehelper.io.php");
require_once("userip/php_fast_cache.php");

$_ip = new ip_codehelper();

$real_client_ip_address = $_ip->getRealIP();
$visitor_location       = $_ip->getLocation($real_client_ip_address);

$guest_ip   = $visitor_location['IP'];
$guest_country = $visitor_location['CountryName'];
$guest_city  = $visitor_location['CityName'];
$guest_state = $visitor_location['RegionName'];

echo "IP Address: ". $guest_ip. "<br/>";
echo "Country: ". $guest_country. "<br/>";
echo "State: ". $guest_state. "<br/>";
echo "City: ". $guest_city. "<br/>";

?>

详情请看这里http://www.a2zwebhelp.com/visitor-location-in-php