<?php
header("Content-type:application/json;charset=utf-8");
function is_url_alive(){
	$opts = array(
		'http'=>array(
		'timeout'=>3,
		)
	);
	$context = stream_context_create($opts);
	return @file_get_contents("http://whois.pconline.com.cn/ipJson.jsp", false, $context);
}
if(empty($_GET['ip'])){
    $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}else{
    $ip=$_GET['ip'];
}
$db=mysqli_connect("database.ghink.net","ghinkapi","ghink2014","ghinkapi");
mysqli_query($db,"set names utf8");
$result=mysqli_query($db,"SELECT `ip` FROM `ip_area` WHERE `ip`='".$ip."'");
if(empty(mysqli_fetch_array($result))){
    if(is_url_alive()){
        $ipinfo=@file_get_contents("http://whois.pconline.com.cn/ipJson.jsp?ip=".$ip."&json=true");
        $ipinfo=iconv("GB2312","UTF-8",$ipinfo);
        $ipinfo=json_decode($ipinfo);
        foreach($ipinfo as $ii=>$ii2){
            $$ii = $ii2;
        }
        echo '{"ip":"'.$ip.'","pro":"'.$pro.'","city":"'.$city.'","addr":"'.trim($addr).'"}';
        mysqli_query($db,"INSERT INTO `ip_area` (`ip`, `pro`, `city`, `addr`, `last_update`) VALUES ('".$ip."', '".$pro."', '".$city."', '".trim($addr)."', '".time()."')");
    }else{
        echo '{"error":"10002"}';
    }
}else{
	$result=mysqli_query($db,"SELECT * FROM `ip_area` WHERE `ip`='".$ip."'");
	$result=mysqli_fetch_array($result);
	echo '{"ip":"'.$result['ip'].'","pro":"'.$result['pro'].'","city":"'.$result['city'].'","addr":"'.$result['addr'].'"}';
}
mysqli_close($db);