Okay, I was able to update the data types, but now when running the cart, the confirm cart page throws and unexpected end of file error on the last line.
I suspected it might be the first line below that should be enclosed in php, but it then gives the error that unexpected T VAR
<script>
var ecart_json = "WA_eCart/eCart1_JSON.php";
</script>
<script src="WA_eCart/js/eC_Display.js"></script>
</body>
</html>
I haven't messed with this page, I only edited the confirm.php page.