PHP rounding problem (5.2.3)?

Question

I\'m wondering if I found an issue with the rounding in PHP, specifically 5.2.3 (I\'m not sure about other versions at the moment):

$t = 0;

$taxAmount = (5.         


        

Answer 1

Python says:

>>> repr(5./100*0.7)
'0.034999999999999996'

This is due to IEEE754 accuracy limitations. Use a fixed-point type if you need exact accuracy.