problem with calculating with php

[Anon]

Is it possible with php to change quantity in html and when you hit recalculate it changes the total price?

If this recalculate button will just refresh page, then won't do 'coz then it will change all the rows quantities into the typed number of quantity.

I do have a some sort of a javasript to calculate, but it doesn't work, maybe because it written into the php code.

Help! Anyone?!

[Anon]

<FORM NAME="form1" METHOD="post" ACTION="trash.php">
<P>This number
<INPUT TYPE="text" NAME="numberboxone" SIZE="2" value = "<?php print $numberboxone; ?>"> times this number <INPUT TYPE="text" NAME="numberboxtwo"SIZE="2" value = "<?php print $numberboxtwo; ?>"> equals this number: <INPUT TYPE="text" NAME="totalbox" SIZE="2" value = "<?php $total = ($numberboxone * $numberboxtwo); if ($total) print $total; ?>"></P><INPUT TYPE="submit" NAME="Submit" VALUE="Submit"></FORM>

[Anon]

Actually it didn't gave the results i wanted, what the heck it didn't even work. Is this even possible it will make this kind of a calculation in real time,not just then when you have predefined the values in the input?

If these is no obivous reasons why this didn't work i'll go with the fact that my server supports only php4.0.2.