如何在在线电台项目的数据库中存储日期和时间？

Question

I have started creating a website for a new online radio station, launching later in the year, and so far the basics are going well - it's running on Apache 2.2, with PHP 5.28.

However, I have one problem I'm struggling to find a solution for - how to store day and time in the database my site runs on, not date and time.

This is the type of thing I mean:

http://www.metroradio.co.uk/staff.asp

http://www.radioaire.co.uk/showdj.asp?DJID=41140

Notice in the second example how the date and time is shown:

This is my example:

Monday: 2:00 PM - 6:00 PM
Tuesday, Thursday - Saturday: 10:00 AM - 2:00 PM
Sunday: 7:00 PM - 11:00 PM

Although the links above use ASP.NET and IIS, my site uses PHP, and I'm not sure of the best way to get this to work in PHP.

This is my database structure for the presenter pages:

presenterid - autoincrement, INT 11
presentername - varchar, 255
airtime - DATETIME
showdesc - varchar 255

Anyone got a good solution?

thanx

Answer 1

You could create a second table, with the following fields :

show_id INT (foreign key)
day_id INT (use date('w'), date('S') or your own system)
begin TIME (time at which the show begins)
end TIME (time at which the show ends)

You must also add an unique constraint for the couple (show_id,day_id) .

When you want to fetch the show, a simple JOIN will give you the times you want.

Answer 2

You could have a program table (presenter, description, etc.), having a one-to-many relationship to a schedule table (day, start time, end time).

Then, you just have to query for all the schedules of a given program, ordered by day, and detect similar start/end times for consecutive days to present them on one line.