php获取ip地址所在地查询程序

IP查询介绍">IP查询

IP	国家/地区	省份	城市	县	运营商
	country.$ipdata->area?>	region?>	city?>	county?>	isp?>

function curl_file_get_contents($durl){
$f = new SaeFetchurl();
$content = $f->fetch($durl);
if($f->errno() == 0) $r=$content;
else $r=$f->errmsg();
return $r;
}
function get_real_ip(){
if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown'))
{$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'];}
return preg_match("/[d.]{7,15}/", $ip, $matches) ? $matches[0] : false;
}
function is_ip($str) {
$ip = explode(".", $str);if (count($ip)<4 || count($ip)>4) return 0;
foreach($ip as $ip_addr) {if ( !is_numeric($ip_addr) ) return 0;if ( $ip_addr<0 || $ip_addr>255 ) return 0;
}return 1;
}
function ipdata($ip,$name="0")
{
$url="http://ip.taobao.com/service/getIpInfo.php?ip=";
$data=json_decode(curl_file_get_contents($url.$ip)); $ipdata=$data->data;
if($name=="all") {return $ipdata;}
else if($name=="0"){return $ipdata->country.$ipdata->region.$ipdata->city.$ipdata->isp;}
else if($name=="1"){return $ipdata->country;}
else if($name=="2"){return $ipdata->area;}
else if($name=="3"){return $ipdata->region;}
else if($name=="4"){return $ipdata->city;}
else if($name=="5"){return $ipdata->county;}
else if($name=="6"){return $ipdata->isp;}
}
?>