Whenever you do a database backup using phpMyAdmin, you are presented with a default file name structure for saves, usually like so:
__DB__
which basically gives you the name of the database you just backed up. Which is ok, however, most people would also like the date and time stamp included as well...
So...
This is how it's done... replace the above with :
__DB__-%F-%T
or for newer version of phpMyAdmin
@DATABASE@-%F-%T
__DB__ = name of database Example: my_database
%F = Same as "%Y-%m-%d" (year-month-day) Example: 2009-11-25
%T = time stamp . (24 hour format, hour_minute_second) Example: 11_07_31
which will save a file with the naming structure similar to:
my_database-2009-11-25-11_07_31.sql
You can easily use other date/time structure, to suit your personal preference.