Need Help Writing a SIMPLE script

[J2MP]

I cant seem to find an easy way to calculate total hours worked. What i need is a MySql database driven PHP calculator. It needs to accecpt hours as an input and add that to what is already saved in the data base. I need it to work for several people. Thanks for your help

[Redcircle]

It all depends on what exactly your situation is. Are the starting and ending times known or are you just adding a set number of hours.