Using this script will help you get started with ease and receive bitcoin payments from users/members at no extra processing costs like most gateway apps charge you. First you need to obtain a APIKEY from blockchain use it in your server or with your host.
A type of digital currency in which encryption techniques are used to regulate the generation of units of currency and verify the transfer of funds, operating independently of a central bank.
This conversion is simply if you already have worked with the BTC>Satoshi. To convert Satoshis to BTC simply Satoshi * 100000000
NB : when requesting an APIKEY I would suggest you avoid free Email providers like (gmail.com/outlook.com/live.com/yahoo.com) on your request, The best is to request via your "email@example.com" email.
Workign with bitcoin BTC is important for you to know and under how many satoshi are in the amount of BTC being processed for calculation reason. BTC>Satoshi simply BTC / 100000000