<?php
 
error_reporting(-1);
 
$creditBalance = 40000;
$percent = 1.03;
$servicePayment = 1000;
$monthlyPaiment = 5000;
$paymentTotal = 0;
$dateName = 0;
$month = 0;
 
if ($month = 1) {
        $dateName = 'месяц';
    }
 
    elseif ($month >= 2 && $month <= 4) {
        $dateName = 'месяца';
    }
 
    else {
        $dateName = 'месяцев';
    }
 
for ($month = 1; $month <= 20; $month ++) {
 
    $creditBalance = ($creditBalance * $percent ) + $servicePayment - $monthlyPaiment;
    $paymentTotal = $paymentTotal + $monthlyPaiment;
 
 
    echo "{$month} {$dateName} спустя : долг = {$creditBalance} руб, выплачено всего {$paymentTotal} руб.\n\n";
 
 
 
    if ($creditBalance <= 5000) {
        $monthlyPaiment = $creditBalance;
        echo "хватит!\n\n";
        break;
    }
}
 
?>

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