<?php // Settlement, Maturity, Investment, Redemption, Basis, Result return [ [ '2008-02-15', '2008-05-15', 1000000, 1014420, 2, 0.057680000000000002, ], [ '2005-04-01', '2010-03-31', 1000, 2125, 0.22500000000000001, ], [ '2008-02-15', '2008-05-15', 1000000, 1014420, 'ABC', '#VALUE!', ], [ '2008-02-15', '2008-05-15', 1000000, -1014420, 2, '#NUM!', ], [ 'Invalid Date', '2008-05-15', 1000000, 1014420, 2, '#VALUE!', ], ];