apr_annuity

Purpose: to calculate the the total yearly interest rate, Norway Only.

Example PHP code apr_annuity($sum, $months, $monthfee, $rate, $startfee, $currency, $result) Input data:

Variable	Type	Description
sum	integer	The amount concerned in ören or cents
months	integer	Amount of months
monthfee	string	Monthly fee
rate	string	The interest rate
startfee	string	Start fee
currency	string	The currency for the purchase. Norska kronor = $KRED_NOK = 1;

Return Value:
An amount to be displayed to the customer how much the part payment will cost.

Klarna integration guide