Form Problem

[H3LL]

Below here is the php and form i got right now.

What i want to achieve is that when i check a checkbox that the TotalCosts will be updated by the matching value, and when i checked multiple boxes that those vallues will be added together.

But the most important thing what i want to achieve right now is that when you check a box that the TotalCosts echo on the screen will be updated right away with the correct vallues.

I tried some things i found while looking here and on other sites, but nothing seems to be working the way i want.

 

Anyways, here is my php, i hope someone can help me 

 

<?php

$hire = 60.00;
$hire1 = 20.00;
$hire2 = 22.50;
$TotalCosts = 0.00;

?>
<form action="index.php" method="post">
	<input type="checkbox" name="hire" value="" />Hire <br />
	<input type="checkbox" name="hire1" value="" />Hire1 <br />
	<input type="checkbox" name="hire2" value="" />Hire2 <br />		
</form>

<?php
	if (isset($_POST['hire'])) {
		$TotalCosts = $TotalCosts + $hire;
	}

	if (isset($_POST['hire1'])) {
		$TotalCosts = $TotalCosts + $hire1;
	}

	if (isset($_POST['hire2'])) {
		$TotalCosts = $TotalCosts + $hire2;
	}

	echo $TotalCosts;
?>

[MMDE]

seemed to work fine for me, just missed a submit button in the form...

<input type="submit" value="submit" />

and you might want to not echo $TotalCosts when it's 0...

if($TotalCosts!=0){
echo $TotalCosts;
}

[H3LL]

Thanks for that, but i already had it working that way before.

What i am trying to achieve is that the totalcost echo gets updated as soon as you check a checkbox, not when you press submit

[MMDE]

Then PHP isn't what you really need, unless there will be zillion of prices (which you would then store in a database and loop out in the form). You need to use javascript.