PHP Adding 2 decimal points numbers (money) gives wrong results in total amount

Question

I have an customer invoice table in my MySQL database with a DECIMAL(10,2) field called price.

When fetching these values in php and calculating a sum amount,

Answer 1

have you tried to

round(totalAmount, 2, PHP_ROUND_HALF_ODD);

it should see last decimal number - if it's odd - rounds down, if even - up