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| Class IPQuery{
private static $_requestURL = 'http://ip.taobao.com/service/getIpInfo.php';
public static function getIPInfo($ip){
$long = ip2long($ip);
if($long === 0){
throw new Exception('IP address error', 5);
}
$ip=long2ip($long);
$IPInfo = self::queryIPInfo($ip);
return self::parseJSON($IPInfo);
}
private static function queryIPInfo($ip){
$query = http_build_query(array('ip'=>$ip));
$ch = curl_init();
$options = array(
CURLOPT_URL => sprintf('%s?%s', self::$_requestURL, $query),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_AUTOREFERER => false,
CURLOPT_FOLLOWLOCATION => false,
CURLOPT_HEADER => false,
CURLOPT_TIMEOUT => 3.0,
);
curl_setopt_array($ch, $options);
$content = curl_exec($ch);
curl_close($ch);
return $content;
}
private static function parseJSON($json){
$O = json_decode ($json, true);
if(false === is_null($O)){
return $O;
}
if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
$errorCode = json_last_error();
if(isset(self::$_JSONParseError[$errorCode])){
throw new Exception(self::$_JSONParseError[$errorCode], 5);
}
}
throw new Exception('JSON parse error', 5);
}
private static $_JSONParseError = array(
JSON_ERROR_NONE=>'No error has occurred',
JSON_ERROR_DEPTH=>'The maximum stack depth has been exceeded',
JSON_ERROR_CTRL_CHAR=>'Control character error, possibly incorrectly encoded',
JSON_ERROR_STATE_MISMATCH=>'Invalid or malformed JSON',
JSON_ERROR_SYNTAX=>'Syntax error',
JSON_ERROR_UTF8=>'Malformed UTF-8 characters, possibly incorrectly encoded',
);
}
|