Stripe Checkout - Create a Variable Charge - php

Question

I was previously charging users a fixed amount, say, "$20," but I wanted to create a donation box that would accept variables. I understand that there is "StripeCheckout.open," but does anyone know how it would look?
That being said, I am currently using the code below to charge a user a fixed amount, though I'm desperate to find out how to set a variable amount that can be charged.
<?php
require_once('config.php');
$token = $_POST['stripeToken'];
$customer = Stripe_Customer::create(array(
'email' => 'customer#example.com',
'card' => $token
));
$charge = Stripe_Charge::create(array(
'customer' => $customer->id,
'amount' => variable,
'currency' => 'cad'
));
?>

Answer 1

Ok, you probably should use V2 instead of V1, and what you want to do is something like this:
$('#sendPledgeBtn').click(function(){
var token = function(res){
var $input = $('<input type=hidden name=stripeToken />').val(res.id);
var tokenId = $input.val();
var email = res.email;
setTimeout(function(){
$.ajax({
url:'make-payment.php',
cache: false,
data:{ email : email, token:tokenId },
type:'POST'
})
.done(function(data){
// If Payment Success
$('#sendPledgeBtn').html('Thank You').addClass('disabled');
})
.error(function(){
$('#sendPledgeBtn').html('Error, Unable to Process Payment').addClass('disabled');
});
},500);
$('form:first-child').append($input).submit();
};
StripeCheckout.open({
key: 'pk_live_XXXXXXXXX', // Your Key
address: false,
amount: $('#amount').val(),
currency: 'usd',
name: 'Canted Pictures',
description: 'Donation',
panelLabel: 'Checkout',
token: token
});
return false;
});