PassKit PHP SDK
PHP SDK for Apple Wallet and Google Pay Membership, Loyalty, etc.
...You will receive an email with your credentials on your registered email address. Follow the instructions in the email to decrypt key.pem, and then copy the .pem files into your project (in this project & for the examples to work they should be in the certs directory). Additionally, the PassKit portal facilitates management, distribution and simple analysis of your Mobile Wallet projects.