I posted a few days ago offering $15 for some work, but it either wasn't enough or nobody could do it. So, what I'd like to know now is, whether the job is possible at all, in particular: A user is presented with three numbers in a row - Row 1, say, each of which has a radio button next to it enabling the user to select the number - for example number a, b or c. Is it possible to use the radio button click to take the adjacent number and place it into the text box in column 4? The user must also be able to fill in the text box with their own number if none of the choices are suitable. Finally the user would click the add button to add up all of the numbers in col 4. You don't need to say how to do it, but if you could let me know can this be done in php?, that would be great. Thank you.
Yes this could, in a roundabout and unnecessarily complex manner be accomplished in PHP. It wouldn't do exactly what you are after though. What you want to be looking to use would be Javascript.
Yup, you will want to use hidden inputs to hold the data, then javascript to move the data from hidden input to textbox.
You can. Why you should instead of simply allowing the user to input their own numbers in the box and using javascript to validate the entry if necessary, that I don't know. But you can.
php won't lload anything new unless you refresh or use something like javascript to pass data back and forth.