storing money amounts in mysql

Question

I want to store 3.50 into a mysql table. I have a float that I store it in, but it stores as 3.5, not 3.50. How can I get it to have the trailing zero?

Answer 1

Does it really matter if it stores is as 3.5, 3.50 or even 3.500?

What is really important is how it is displayed after it is retrieved from the db.

Or am I missing something here?

Also don't use a float, use a decimal. Float has all sorts of rounding issue and isn't very big.