Wikipedia has a list of 8 or so variations on the last 2 characters in Base64 So if you base-64 encode a file, print it back for debugging purposes, and see. $fromBaseInput base of the number to convert as a string 2. Convert a 32-char hexadecimal UUID (128-bit) to a 25-char base-36 unique key, and vice versa. Stripe payment integration for Shopware 4/5. Contribute to ShopwareStripePayment development by creating an account on GitHub.