On Wed, Jul 22, 2009 at 08:41:23AM -0700, c...@hosting4days.com wrote: <snip>
> Another newbie question: storing dates and times... > > I'm trying to build a simple notepad page where I can attach a date > and even time field. So this Tigra or yahoo calendar will be great > date picker helper. > > This is for the US, so I'd like the user to see normal us formatting > like: > > date field - 7/1/2009 and separate time field like: 11:30 AM > > mysql can use a DATE or TIME or datetime field type. and seems to use > a different standard like: YYYY-MM-DD I want to to be able to do date > calcs and such - so what is the best way (types) to store these > fields in mysql and display them on the page with php? The YYYY-MM-DD is an ISO date format which makes date sorting simple. I typically store dates in this format in databases (though it's usually configurable). For outside-database uses, I coded a date class which uses Julian days as its basic unit of storage. One of the issues I wanted to avoid is the upcoming "Y2K-like" issue with Unix timestamps. In many places, unix timestamps are stored as 32 bit integers, which will reach their capacity, I believe, in 2038. (We'll probably all have 64 bit machines by then.) Thus, the class generally doesn't consult Unix timestamps This makes duration and date calculations simple. If you like, I can email you the class privately. Store times as a separate field. Paul -- Paul M. Foster -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
