<?php
 
 
error_reporting(-1);
 
function getBalance($deposit,$percent,$comission,$paidAmount){  /* начальные условия функции*/
	for ($i=0;$i<100;$i++){ /*задаю цикл*/
		$overallPaid=0;/*начальной выплаты нету */
		if ($deposit>0){ /*условие цикла*/
			$deposit = ($deposit*$percent)+$comission-$paidAmount;/*операция с суммой*/
			$overallPaid=$paidAmount+ $overallPaid;/*высчитываю затраты*/
		} else {
			$overallPaid= $overallPaid+ $paidAmount+$deposit;/*высчитываю остаток*/
			return $overallPaid;
			break;
		}
	}
}
 
$abc =  getBalance (39999,1.1,1000,5000);
echo "$abc";

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