Description: ------------ There are many methods like getNextDay(), dayOfWeek() or daysInMonth() that should raise an error when the needed data fields (year, month, day,..) are not set to a meaningful value. If the Date object is initialized with "2008-00-00", what is dayOfWeek() supposed to return? At some point (directly at the initialization, or when calling of the calculation methods) there should be a warning that the return result simply has to be plain wrong, because there is not enough data to calculate it. Test script: --------------- $foo = new Date('2007-00-00'); var_dump($foo->getDayOfWeek()); Expected result: ---------------- * (bool) false * PEAR_Error * Exception * ... Actual result: -------------- float(4)

I think this will break the BC, but it's OK we can start it for 1.5 branch. And well many changes should be done to accomplish this feature.

You are right, this will break bechward compatibility indeed. But I believe that it would make the Date package much more reliable and would reduce the code needed when using the package. Thanks!