$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',    );}