Stripe Integration in Custom PHP

I want stripe integration in my custom PHP website. Stripe integration is easy but real challenge here is I want to do subscription and products checkout all in one instant so user will buy and do subscription in one instant (one checkout)
Before doing bid make sure to add word "Time Stripe" so I know you read requirements before bidding
I am setting range from 10-30 but It can be high depend on how you work

Thank you