Re: Is php even right for this design?

William wrote:

1) Payroll apps require large tax libraries (federal, every state and locality). Split them into more files (diffrent states etc.) and include_once them when they are needed,

and perhaps mysql can take part of the job.

4)Loosely Typed Variables. I fear it might be to simple in PHP to have a dollar amount converted to a string and become rounded or truncated, because php's loose type. This might be a smaller issue than I think? Is there a way to strictly enforce types/conversions so my numerics stay numerics? The issue is with floating point numbers, I encourage you to do the calculations in cents and round up when needed.