Online Calculator to determine the Value of Something

[hargz]

Hi,

 

Can someone help me make a calculator like on Nextworth.com

Would really appreciate it.

 

How would i go about making it?

 

Thanks

 

Sam

[Maq]

[hargz]

Anyone else?  ???

[corbin]

You have to at least try....

[hargz]

Hi,

 

I don't even know where to begin!

How would you make one?

 

Thanks

 

Sam

[ok]

sam why not study php first.

 

http://php.net/

 

[Daniel0]

Right... I see the people above decided to be really helpful...

 

Say somebody wanted to sell you a lightly worn, 8 GB, black 1st gen iPhone with charger, USB cable, and a headset. How would you figure out what you wanted to pay for that? If you don't know that then you won't know how to teach a computer to figure it out either.

 

Here is how I would do it:

Have a base price for each model. Each of the other things you can select between will modify the price. E.g. a broken item could decrease the price by 60% where light wear would only decrease it by 15%. Whether it's black or white doesn't affect the price, so it won't alter it. This is essentially the decorator pattern.

 

Also, I'll move this to app design.

[hargz]

Hi,

I have my values as follwoing:

Each iPod on a different size has a base price.

For example a Nano 8gb and a Nano 4gb Have a different price.

Then the colour does not effect the price of the iPod.

The standard trade in condition is NW which is the base price

EX condition has a +10% value and HW has a -10% value.

I understand all my values, i just need to know how to make a form that enables me to show the values that change.

 

I have placed the values of all the iPods in an excel spreadsheet and with the values of the added items such as headphones etc.

 

Thank you for your help.

 

Sam

[corbin]

Right... I see the people above decided to be really helpful...

 

Say somebody wanted to sell you a lightly worn, 8 GB, black 1st gen iPhone with charger, USB cable, and a headset. How would you figure out what you wanted to pay for that? If you don't know that then you won't know how to teach a computer to figure it out either.

 

Here is how I would do it:

Have a base price for each model. Each of the other things you can select between will modify the price. E.g. a broken item could decrease the price by 60% where light wear would only decrease it by 15%. Whether it's black or white doesn't affect the price, so it won't alter it. This is essentially the decorator pattern.

 

Also, I'll move this to app design.

 

 

Awkward.....

 

I thought it was just a normal calculator.  Didn't realize it was a pricing calculator.  I didn't bother looking at the site when I saw no code posted.

[hargz]

any tips to help make this?

Thanks

Sam

[Daniel0]

You could use the decorator pattern like I said above, or you can do something like this:

 

<?php
$basePrice = 100; // determine this based on the type of model

if ($_POST['condition'] == 'NW') {
$basePrice *= 1.1; // add 10%
}

// etc.

echo $basePrice;
?>