Thanks;
This is a great help, One question though, I have figured out how to
multiply 2 numbers using "bcdiv()" but how do I multiply 3 numbers?
Shawn
----- Original Message -----
From: "Shannon -jj Behrens" <[EMAIL PROTECTED]>
To: "FreeTrade" <[EMAIL PROTECTED]>
Sent: Wednesday, September 06, 2000 10:59 AM
Subject: Re: [FreeTrade] Modifications to item entry using PHP
mathematicalfunctions - Need Some Advice
> > Good Morning to one and all.
> >
> > Maybe someone out there can help me with an idea. Is it possible to
have
> > the add_item screen also do some mathematical functions in the
background?
>
> I don't think you need to do it "in the background" (i.e. in a separate
> thread or process). You can simply do the processing in the action
> module.
>
> > I would like to make a system where the admin would enter in the product
> > information, and them based upon a numerical value for certain
information
> > have a price automatically generated.
> >
> > The information for a product would include inside dimension (height,
width,
> > depth), the condition of the product (new, like new, old, battered), and
any
> > changes made to it (retitled, original, rejacketed). I would like to be
> > able to have a system in place that would multiply the inside dimensions
and
> > come up with a total volume, then compare that with a table of values
> > (prices) and pick the closest one. Then take the new price and change
it
> > depending on the other info, if the title is rejacketed then add 10% and
if
> > it is in new condition add another 10% and from this generate the final
> > price for the product.
> >
> > Do you think this can be done? And if it can be done, can it be
integrated
> > with Freetrade?
> Sure. Add the volume information to the add_sku page so that the admin
> can enter it (naturally, you can get rid of the List Price and Sale
> Price fields since the admin will no longer be using them). Then you
> can do some algebra such as the following (in ADD_SKU):
>
> function priceByVolume($volume)
> {
> if ($volume < 15) return 23;
> if ($volume < 30) return 43;
> if ($volume < 45) return 56;
> ...
> }
>
> $listPrice = priceByVolume($width*$height*$length);
> if ($rejacketed)
> {
> $listPrice *= 1.1; // add 10%
> }
> if ($quality == "NEW")
> {
> $listPrice *= 1.5;
> }
>
> I'm sure you get the idea.
>
> > P.S. can anyone suggest a good tutorial for using mathematical functions
in
> > PHP? I have Leon's new book but it only covers the really wierd stuff
like
> > ARC, and TAN, and COSINE. I only made it to 1st year geometry so that
stuff
> > is all greek to me. :-)
>
> You probably only need some simple algebra (so far, you have not
> mentioned anything more complicated), so you can use something like the
> above example.
>
> Best Regards,
> -jj
>
> --
> if (shannon - jj) * behrens == webEngineer["CLEAR INK�"]:
> print "<i>imagination is the only real medium(sm)</i><br>"
>
>
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