mysql - PHP COI Rate Calc foreach, for and possible while loop? -


i'm trying achieve below process using php i'm stumped, able provide hand?

get table contains years database     loop through each row (year) using foreach loop         use loop divide year months (12)             calculation on each month can verified on month 12 of each year             if verification unsuccessful +/- number , re-run loop current year             else carry on next year

many thanks


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