php获取当前ip

php获取当前ip
$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];
$URL='http://ip.taobao.com/service/getIpInfo.php?ip='.$user_IP;
$fcontents = file_get_contents("$URL");
$contents=json_decode($fcontents);
?>







echo '您来自: '.$contents->data->country.$contents->data->area.$contents->data->region.$contents->data->city.' ip为'.$contents->data->ip;
?>


另外在附一份tp自带的吧：
参考：https://github.com/liu21st/thinkphp/blob/master/ThinkPHP/Library/Org/Net/IpLocation.class.php/*
* 根据ip地址获取所在城市
*/
protected function checkUserArea(){
import("ORG.Net.IpLocation");
$myip=get_client_ip();
$Ip=new IpLocation("UTFWry.dat");//导入ip库 参考http://thinkphp.cn/extend/270.html 把下载的文件放在Lib\ORG\Net下
$area=$Ip->getlocation($myip);
return $area;
}

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