php查询IP地址归属等信息，_PHP教程

php查询IP地址归属等信息，

淘宝公司提供了一个很好用的IP地理信息查询接口。
在这里:http://ip.taobao.com/
TaobaoIPQuery2这个类将极大的简化相关的信息查询。

类 TaobaoIPQuery2 文件：

 1 $ip));
21         $ch = curl_init();
22         $options = array(
23             CURLOPT_URL => sprintf('%s?%s', self::$_requestURL, $query),
24             CURLOPT_RETURNTRANSFER => true,
25             CURLOPT_AUTOREFERER => false,
26             CURLOPT_FOLLOWLOCATION => false,
27             CURLOPT_HEADER => false,
28             CURLOPT_TIMEOUT => 3.0,
29         );
30         curl_setopt_array($ch, $options);
31         $content = curl_exec($ch);
32         curl_close($ch);
33         return $content;
34     }
35     
36     private static function parseJSON($json){
37         $O = json_decode ($json, true);
38         if(false === is_null($O)){
39             return $O;
40         }
41         if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
42             $errorCode = json_last_error();
43             if(isset(self::$_JSONParseError[$errorCode])){
44                 throw new Exception(self::$_JSONParseError[$errorCode], 5);
45             }
46         }
47         throw new Exception('JSON parse error', 5);
48     }
49     
50     private static $_JSONParseError = array(
51         JSON_ERROR_NONE=>'No error has occurred',   
52         JSON_ERROR_DEPTH=>'The maximum stack depth has been exceeded',   
53         JSON_ERROR_CTRL_CHAR=>'Control character error, possibly incorrectly encoded',   
54         JSON_ERROR_STATE_MISMATCH=>'Invalid or malformed JSON',   
55         JSON_ERROR_SYNTAX=>'Syntax error',   
56         JSON_ERROR_UTF8=>'Malformed UTF-8 characters, possibly incorrectly encoded',
57     );
58 }

TaobaoIPQuery2.Class.php：

 1 $ip));
16         $ch = curl_init();
17         $options = array(
18             CURLOPT_URL => sprintf('%s?%s', self::$_requestURL, $query),
19             CURLOPT_RETURNTRANSFER => true,
20             CURLOPT_AUTOREFERER => false,
21             CURLOPT_FOLLOWLOCATION => false,
22             CURLOPT_HEADER => false,
23             CURLOPT_TIMEOUT => 3.0,
24         );
25         curl_setopt_array($ch, $options);
26         $content = curl_exec($ch);
27         curl_close($ch);
28         return $content;
29     }
30     
31     private static function parseJSON($json){
32         $O = json_decode ($json, true);
33         if(false === is_null($O)){
34             return $O;
35         }
36         if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
37             $errorCode = json_last_error();
38             if(isset(self::$_JSONParseError[$errorCode])){
39                 throw new Exception(self::$_JSONParseError[$errorCode], 5);
40             }
41         }
42         throw new Exception('JSON parse error', 5);
43     }
44     /* http://www.cnblogs.com/roucheng/ */
45     private static $_JSONParseError = array(
46         JSON_ERROR_NONE=>'No error has occurred',   
47         JSON_ERROR_DEPTH=>'The maximum stack depth has been exceeded',   
48         JSON_ERROR_CTRL_CHAR=>'Control character error, possibly incorrectly encoded',   
49         JSON_ERROR_STATE_MISMATCH=>'Invalid or malformed JSON',   
50         JSON_ERROR_SYNTAX=>'Syntax error',   
51         JSON_ERROR_UTF8=>'Malformed UTF-8 characters, possibly incorrectly encoded',
52     );
53 }

调用：

$ip = $_SERVER["REMOTE_ADDR"];
$ipquery = new taobaoIPQuery($ip);
$region = $ipquery->get_region();
$country = $ipquery->get_country();
$city = $ipquery->get_city();