This API allows you to create a new Wallet on Blockchain.info. It's the same as if you are registering on the webside but programmatically. On Blockchain.info you can do all thing either of the website or programmatically, which can be very usefull.
If you want to call the api from PHP, you need to send a JSON-Request to https://blockchain.info/api/v2/create_wallet.
For a tutorial of JSON-Request in PHP look here
For sending and receiving Payments you need to use this api:
https://blockchain.info/api/blockchain_wallet_api
There are also some examples in PHP on this site.
Blockchain.info does not offer a referral programm, so there is no reward for providing new users.
do you have a link? – Dennis Kriechel – 2014-06-11T09:11:41.073
updated in my question – user17010 – 2014-06-11T09:17:55.603
What exactly do you mean with api code? on the side there is an example on how to call the api. – Dennis Kriechel – 2014-06-11T09:18:56.787
what is the use of this api? – user17010 – 2014-06-11T09:23:52.497