php - Make PHP's bc round instead of truncate?

Question

I'd like bcadd(4.9,3) to return 8 rather than 7. I'm using an example without lots of decimal places here, but the basic idea (that I want to round, rather than truncate) still stands. How do I do this?

Answer 1

bcadd让您指定精度（和bcscale）。如果您有一个小数最大值，您可以将其更改为bcadd(4.9,3,$some_huge_number).. 然后您可以使用round().