Convert parameter format in Mysql query

[About the conversion of timestamps]

1. Convert time to timestamp

select unix_timestamp('2009-10-26 10-06-07');

2. Convert timestamp to time

select from_unixtime(1256540102);

[About IP address conversion]

1. Convert IP address to number

select inet_aton ('210.30.0.103');

2. Convert numbers to IP addresses

select inet_ntoa (3525181543);