> > On Mon, April 25, 2005 3:14 pm, Richard Collyer said: > > This is probably more of a db question but... > > Probably. > > > I am writing an employee database for work. The majority of it is > > simple enough however I am stuck on the timetabling. It has > to be done > > in PHP as there are 40 plus team leaders whose computers > are all old > > and have IE on them as one similarity. Also any changes I > make to the > > program are repllicated over those machines instantly. > > Hrmmmm. > > > We have ~1500 Employees. There are 4 shifts which overlap. > > > > My idea of doing this was to have a database with each > record being a > > day for a particular employee. Recording ID, Start Time, > Finish Time > > in TimeStamp. > > Okay. > > > So I could then do a search for the number of employees whose shift > > start or finished in that particular day. If there is a start and a > > finish left add up the hours, if only a start do start -> > midnight and > > if only a finish do midnight -> finish. > > > > Is this a sensible way to do it? Or can anyone suggest a > better tried > > and tested way. > > Doing what, exactly? > > I mean, it kinda depends on what you want to *DO* other than > the search you give as an example... > > Which, by the way, I would recommend coding more like this: > > 1. Find everybody whose shift STARTED on date (D). > 2. Subtract their finish time from start time for their hours > (H) on that date (D). > > You then don't have to muck around with midnight and shifts > that start/end on different days. > > You just pretend that their shift happend on the date of the > start time, and that's the day you associate with that shift, > no matter when it ended. > > This simplifies everything else you're going to do with the > data/queries immensely.
Just have to make sure DST doesn't cause any problems. Jared -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
