php - PHP COI Rate Calc foreach，for和可能的while循环？

Question

我正在尝试使用 PHP 实现以下过程，但我很难过，有人能帮忙吗？

Get table that contains years from database
    Loop through each row (year) using a foreach loop
        Use a for loop to divide year into months (12)
            Do a calculation on each month which can only be verified on month 12 of each year
            If verification is unsuccessful +/- a number and re-run the for loop for the current year
            Else carry on to the next year

非常感谢