RE: Calendar/Date

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From: Paul M Foster
> On Tue, Mar 17, 2009 at 08:52:11PM -0700, Jason Todd Slack-Moehrle
wrote:
> 
>> Hi All,
>>
>> Does anyone have code and/or advice for how to get get the current
>> week (with a passed current day, say) and what then end date is at
>> Saturday.
>>
>> So take today: Tuesday March 17, 2009
>>
>> I want to get:
>> Sunday March 15, 2009
>> Monday March 16, 2009
>> Tuesday March 17, 2009
>> Wednesday March 18, 2009
>> Thursday March 19, 2009
>> Friday March 20, 2009
>> Saturday March 21, 2009
> 
> I just answered a question similar to this. You might check the
> archives. In this case, you'll need to use the getdate() function (see
> php.net/manual/en/ for details) to get the array of values for today
> (like the day of the month, month number, year, etc.). The getdate()
> function returns an array, one of whose members is 'wday', which is
the
> day of the week, starting with 0 for Sunday. Use that number to
> determine how many days to go back from today. Then use mktime() to
get
> the timestamps for each day in turn. You feed mktime() values from the
> getdate() call. Then you can use strftime() or something else to print
> out the dates in whatever format, given the timestamps you got.
> 
> Be careful in feeding values to mktime(). If your week spans a
> month or year boundary, you'll need to compensate for it when giving
> mktime() month numbers, day numbers and year numbers.

You also need to be aware that on 32 bit Unix and Linux systems the
behavior of mktime() on dates after Jan 18, 2038 is undefined. The 32
bit counter overflows early on the 19th, so any value returned is
invalid. This is not a problem on 64 bit systems.

We ran into this recently because Support was defining "never expire" as
Today plus 30 years. A couple of sites started reporting problems about
two months ago.

Bob McConnell

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