PHP fees calculation

[edgarasm]

Dear PHPFREAKS

 

I was hoping maybe i would be able to get some help here 

 

Im thinking on calculating fees and certain percentage of transaction ?

 

Which would be the best way to do so ?

 

so after each withdrawal upload sending funds there would be a  specific charge applied plus a percentage ,so lets say i would be sending $20 and the recipient would only receive 17.50 

 

 

 

Im using code igniter framework .

 

Any help would be appreciated 

 

Thanks 

[kicken]

It doesn't really matter what framework you are using. It's just basic math. You take the amount and subtract the fees.

 

If you are going to do both a flat fee and percentage, you need to decide which order you want to remove them in and be consistent. Removing the flat fee first then taking a percentage would reduce the percentage fee amount.

 

//As a fraction from 0 (0%) to 1 (100%)
$feePercent=0.1;

//in dollars
$amount = 20;
$flatFee = 0.50;
$rateFee = $amount*$feePercent;
$net = $amount - $flatFee - $rateFee;

[edgarasm]

Thanks for your help