help needed

[paldo]

I'm trying to write a script. On the total1, total2, total3 and total textarea the multiplication should be print (echo) when a quantity is entered. Can you give me an hint?

<?php
$total1=$quantity1*10
$total2=$quantity1*15
$total3=$quantity1*20
$total=$total1+$total2+$total3

<form action="order.php" method="POST">
  <input type="text" name="quantity1" value=""  size="5" /> 
  item1 for 10$
  makes 
  <input type="text" name="total1"  value="" size="5" />
  <p>
  <input type="text" name="quantity2" value=""  size="5" /> 
  item2 for 15$ makes 
  <input type="text" name="total2"  value="" size="5"/>
  </p>
  <p>
  <input type="text" name="quantity3" value=""  size="5" /> 
  item3 for 20$ makes 
  <input type="text" name="total3"  value="" size="5" />
  </p>
  <p>Total 
    <input type="text" name="total" value="" size="5" />
  </p>
</form>
?>

Thank you

[djjjozsi]

its easier to make in javascript, in php you need to press submit button to calculate.

you need to close the lines with a ( ; ) semicolumn

when you want to embed html into your php script, you can break out of the php blocks:

<?php
$main=empty($_POST["main"])? 0 : int($_POST["main"]);
$val1=$main*4;
$val2=$main*45;
$val3=$main*487;

?>
form here
<input name="main" type="text" value="<?php echo $main ?>"><br />
<input name="val1" type="text" value="<?php echo $val1  ?>"><br />
<input name="val2" type="text" value="<?php echo $val2 ?>"><br />
<input name="val3" type="text" value="<?php echo $val3 ?>"><br />
submit here
<?php
rest of your code.

?>

[jwagner]

Any reason why the title of this post isn't descriptive at all?

[paldo]

No I just did not known how to title it. Any idea? I can add a title, can't I?

[paldo]

Hallo

Thanks for your javascript suggestion. As far as I know from a little investigation, javascript doesn't allow to send the order to a email adress without having to open the default mail program install on your PC. This is a big disadvantage.
Is it possible to integrate a javascript into a php form?
Is it possible with simple coding to have the above script that I have submitted with a preview on the same browser window of the cost of the order without clicking on the submit button, just as you can do with javascript?

Thanks

[djjjozsi]

first:
you can calculate with javascript and enter the result into a textfield. If the user wanted to send the form, the entered values can send to the php's mail() function (submit the form).
There is no need to submit the whole form on preview, becouse javascript can calculate the totals, all you need. You have a preview button which calls a javascript calculate function.