Adding up a total based on selected checkboxes

[Dimplistic]

This is the section of my form:

 

<input type="checkbox" name="whatever[]" value="Book1">

<input type="checkbox" name="whatever[]" value="Book2">

<input type="checkbox" name="whatever[]" value="Book3">

 

And here is my php so far:

 

$pricelist_book = 11.99;

if(isset($_POST['whatever']))

{
for ($i=0; $i<count($_POST['whatever']);$i++) {
	echo "<br />" . $_POST['whatever'][$i] . "<br /><br />". "(". "€". $pricelist_book . " " . "each" . ")"  ."<br /><br />";
}
}

 

That should (I hope) pick up whatever was selected from the checkboxes (some or all) and display the price after it. (same price for each).

 

However, what I would like to see  is for it to display the price of 2 books or 3 books if selected.

[joel24]

if they're the same price, then you'd just need

$price = count($_POST['whatever']) * $bookPrice;

[Dimplistic]

if they're the same price, then you'd just need

$price = count($_POST['whatever']) * $bookPrice;

 

Thanks a lot for that. 

 

I inserted that but I was getting error messages.  Where exactly do I place it?

[Dimplistic]

Oh it is working now thanks!