将IPV6和IPV4存储在MySql中并读取它

Question

I have a php site. I want to store an last ip for each user. I want it to work for both IPV4 and IPV6 users. Any idea how?

Answer 1

Simply convert them to a binary representation using inet_pton() and later back to a string using inet_ntop() .

Another solution would be storing the IP string without any transformations in the DB. A VARCHAR(39) field will do the job as the highest/longest IPv6 is ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff