Mr Lynch, Thanks a lot for your help so far! I will answer or respond in message. Yours, Kevin "Richard Lynch" <ceo@xxxxxxxxx> wrote in message news:1815.66.99.91.45.1110305950.squirrel@xxxxxxxxxxxxxxxx > Kevin wrote: > > Right now I'm working on a script that would calculate dates from one > > calendar to another. The normal calendar we use and a newly invented one. > > [shudder] > There are already WAY too many calendar systems. > > Inventing a new one is probably not such a good plan... > > Why re-invent the wheel? It's part of a game. In the RPG there are dates which the players would like to be able to convert from our calendar to that one, and back again.. > > > In order to do that I need to find the exact days since the year 0 BC/AD. > > However, the functions php provides only allow up to the unix epoch. > > > > Could you guys give me some pointers on how to accomplish this, > > accurately? > > Take a look at the MySQL date ranges -- They may have a data type that > allows for more than just 1/1/1970 to 3/??/2038 > > If not, consider using PostgreSQL which has VERY extensive and flexible > date support, for ranges MUCH larger than 0 BC/AD. > http://postgresql.org > > I believe PostgreSQL even supports time scales on the order of geological > events and for astronomical purposes, though not with "day" accuracy. > > I am assuming that by "accurately" you mean "to the nearest day" since you > spoke of "exact days", right? Aye.. it's nearest day, and according to calculations should have repeatable results. So what is date X today should also be it tomorrow (after the calculations of course). That's what i've noticed so far. when I add a date and convert it and then convert it back it is a different date. > > But you didn't define how far into the future you need to go. > Current time? > A few years out? > Stardates from Star Trek? > You have to specify a start date, end date, and accuracy to choose a > correct calendar system. It's mostly the past. The RPG is set in Egypt and the beginning of the society in egypt has been taken as year 0. The start date I think is obvious, but I do not understand an end date of a calendar.. Perhaps I'm just blond.. but could you perhaps explain that one? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
