[RESOLVED] Checkboxes submit

[kows]

um, maybe because you haven't defined total?

$total = 0; //added this.


for($a=1;$a<5;$a++){

if(isset($_POST['cb'.$a]))
{
$amount = $_POST['cb'.$a];
$total += $amount; //<------ error referes to this line of code
}
}
echo $total;