Description:

This is a dynamic shared object (DSO) for PHP that will add calendar support.

The calendar extension presents a series of functions to simplify converting
between different calendar formats. The intermediary or standard it is based on
is the Julian Day Count. The Julian Day Count is a count of days starting from
January 1st, 4713 B.C. To convert between calendar systems, you must first
convert to Julian Day Count, then to the calendar system of your choice. Julian
Day Count is very different from the Julian Calendar! For more information on
Julian Day Count, visit http://www.hermetic.ch/cal_stud/jdn.htm. For more
information on calendar systems visit
http://www.boogle.com/info/cal-overview.html. Excerpts from this page are
included in these instructions, and are in quotes.