<?php // settlement, maturity, price, redemption, basis, result return [ [ '2007-01-25', '2007-06-15', 97.974999999999994, 100, 1, 0.052420213, ], [ '2010-04-01', '2015-03-31', 95, 100, 0.01, ], [ '2010-04-01', '2015-03-31', 0, 100, '#NUM!', ], [ '2010-04-01', '2015-03-31', 'ABC', 100, '#VALUE!', ], [ 'Invalid Date', '2007-06-15', 97.974999999999994, 100, 1, '#VALUE!', ], ];