获取客户端+服务端IP及地理位置信息

/**
 * 获取客户端+服务端IP及地理位置信息 Sina iplookup
 *
 * @Support：QQ 910111100 (JoY)
 * @Time: 2012.10.11 15:50:00
 * @HZapi.com (http://www.hzapi.com/)
 * 
 */
//取得地理位置信息
function iplookup($ip=1){
    if($ip){ //客户端
        $userip=egetip_joy(); //客户端IP
    }else{ //服务端
        $domain=$_SERVER['HTTP_HOST'];
        $userip=gethostbyname($domain);
    }
    //返回Sina地理位置信息
    $json=@file_get_contents('http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=js&ip='.$userip);
    $patterns = array();
    $patterns[0] = '/var remote_ip_info = /';
    $patterns[1] = '/;/';
    $patterns[2] = '/\Wu/';
    $find = array();
    $find[0] = "";
    $find[1] = "";
    $find[2] = "%u";
    $json = preg_replace($patterns, $find, $json); //过滤多余字符
    $json_arr=json_decode($json,true); 
    return $json_arr;
}
//取得IP
function egetip_joy(){
    if(getenv('HTTP_CLIENT_IP')&&strcasecmp(getenv('HTTP_CLIENT_IP'),'unknown')) 
    {
        $ip=getenv('HTTP_CLIENT_IP');
    } 
    elseif(getenv('HTTP_X_FORWARDED_FOR')&&strcasecmp(getenv('HTTP_X_FORWARDED_FOR'),'unknown'))
    {
        $ip=getenv('HTTP_X_FORWARDED_FOR');
    }
    elseif(getenv('REMOTE_ADDR')&&strcasecmp(getenv('REMOTE_ADDR'),'unknown'))
    {
        $ip=getenv('REMOTE_ADDR');
    }
    elseif(isset($_SERVER['REMOTE_ADDR'])&&$_SERVER['REMOTE_ADDR']&&strcasecmp($_SERVER['REMOTE_ADDR'],'unknown'))
    {
        $ip=$_SERVER['REMOTE_ADDR'];
    }
    $ip=preg_replace("/^([d.]+).*/","1",$ip);
    return $ip;
}
/**
 * 模拟JS里的unescape
 *
 * @Support：QQ 910111100 (JoY)
 * @Time: 2012.09.29 15:50:00
 * @HZapi.com (http://www.hzapi.com/)
 * echo unescape('%u4e1c%u6e56%u82b1%u56ed4%u53f7%u5c0f%u533a');
 */
function unescape($str) {
    $str = rawurldecode($str);
    preg_match_all("/(?:%u.{4})|.{4};|&#\d+;|.+/U",$str,$r);
    $ar = $r[0];
    foreach($ar as $k=>$v) {
        if(substr($v,0,2) == "%u")
        {
            $ar[$k] = iconv("UCS-2","utf-8//IGNORE",pack("H4",substr($v,-4)));
        }
        elseif(substr($v,0,3) == "")
        {
            $ar[$k] = iconv("UCS-2","utf-8",pack("H4",substr($v,3,-1)));
        }
        elseif(substr($v,0,2) == "&#")
        {
            echo substr($v,2,-1)."";
            $ar[$k] = iconv("UCS-2","utf-8",pack("n",substr($v,2,-1)));
        }
    }
    return join("",$ar);
}
 
 
$iplookup=iplookup(); //iplookup(1)参数非空为获取服务器端IP
 
echo "IP：".egetip_joy()."<br>";
echo '返回状态：'.$iplookup['ret']."<br>";
echo 'IP范围Strat：'.$iplookup['start']."<br>";
echo 'IP范围End：'.$iplookup['end']."<br>";
echo '国家：'.unescape($iplookup['country'])."<br>";
echo '省份：'.unescape($iplookup['province'])."<br>";
echo '城市：'.unescape($iplookup['city'])."<br>";
echo '区/县：'.unescape($iplookup['district'])."<br>";
echo '线路：'.unescape($iplookup['isp'])."<br>";
echo '类型：'.$iplookup['type']."<br>";
echo '描写：'.$iplookup['desc']."<br>";
//print_r($iplookup);