classIpLocation{//QQWry.Dat文件指针var$fp;var$firstip;var$lastip;var$totalip;functiongetlong(){//unpack从二进制字符串对数据进行解包//将读取的little-endian编码的4个字节转化为长整型数,fread安全读取二进制文件$result=unpack('Vlong',fread($this->fp,4));return$result['lo