<?php
 
error_reporting(-1);
 
function depositCalculation($creditSum,$percent,$commission,$payout) {
	for ($creditSum; $creditSum >= 0; $creditSum = ($creditSum*$percent) + $commission - $payout) {
		if ($creditSum < 0) {
			$paymentTotal = $paymentTotal + $creditSum;
		}
		else {
 
		$paymentTotal = $paymentTotal + $payout;
	}
	return $paymentTotal;
	}
}
 
$creditSum = 40000;
$payout = 5000;
$homoCreditTotal = depositCalculation($creditSum,1.04,500,$payout);
$softBankTotal = depositCalculation($creditSum,1.03,1000,$payout);
$strawberryBankTotal = depositCalculation($creditSum+7777,1.02,0,$payout);
 
echo "HomoCredit: {$homoCreditTotal} руб. \n";
echo "SoftBank: {$softBankTotal} руб. \n";
echo "StrawBerryBank: {$strawberryBankTotal} руб. \n";
 
?>