Can somebody help me to write PHP function ? - Just in Time alghoritm.

mario said the following on 23/05/2006 13:31:
> Hi, I have verry big problem.
> I must write function using dates.
> This is a problem:
> I have some dates for example: 2006-01-01, 2006-02-05, 2006-10-15 etc.
>
> then some times: 20sec, 50sec, 45sec etc
> and some quantity of parts: 200, 300, 240
> ---------------------------------------------------------------------
> I must sort dates,times and quanties, then I must calculate:for ex.
> 2006-01-01+200*20, etc. and then add next date+quanntity*time. Please
> HELP me.
> It's like "Just In Time" alghoritm, I thing.
>

This is best achieved by converting the dates to timestamps (number of
seconds since 01/01/1970), using mktime(). Once you've done that, you
can add your ($quantity * $time) to the timestamp, and then reconvert
using date().

Quite what it is you want to sort, I'm not sure. But timestamps are
very easy to sort, as they're just integers.


--
Oli

Hi, I have verry big problem.
I must write function using dates.
This is a problem:
I have some dates for example: 2006-01-01, 2006-02-05, 2006-10-15 etc

then some times: 20sec, 50sec, 45sec etc
and some quantity of parts: 200, 300, 240
---------------------------------------------------------------------
I must sort dates,times and quanties, then I must calculate:for ex.
2006-01-01+200*20, etc. and then add next date+quanntity*time. Please
HELP me.
It's like "Just In Time" alghoritm, I thing.

Thanks All for answer

--
mari
-----------------------------------------------------------------------
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I want to sort everything for example:
I must produce 200 parts. (it is 200*20 sec.) to 2006-01-01

I must sort all dates before, from min to max (max to min) and add all
results, then I must convert (reverse) into the dates.
p.s. sorry my English ist't good.
Mario

Uzytkownik "Oli Filth" <catch@olifilth.co.uk> napisal w wiadomosci
news:KdDcg.941$c76.427@newsfe1-win.ntli.net...
> mario said the following on 23/05/2006 13:31:
>> Hi, I have verry big problem. I must write function using dates. This is
>> a problem: I have some dates for example: 2006-01-01, 2006-02-05,
>> 2006-10-15 etc.
>>
>> then some times: 20sec, 50sec, 45sec etc and some quantity of parts: 200,
>> 300,
>> 240 ---------------------------------------------------------------------
>> I must sort dates,times and quanties, then I must calculate:for ex.
>> 2006-01-01+200*20, etc. and then add next date+quanntity*time. Please
>> HELP me. It's like "Just In Time" alghoritm, I thing.
>
> This is best achieved by converting the dates to timestamps (number of
> seconds since 01/01/1970), using mktime(). Once you've done that, you can
> add your ($quantity * $time) to the timestamp, and then reconvert using
> date().
>
> Quite what it is you want to sort, I'm not sure. But timestamps are very
> easy to sort, as they're just integers.
>
>
> --
> Oli