Please Give the tutorial or a code of worldpay integration in php. (Merchant Account)
Why? At least make an attempt.
Here's what the rules say: 'Do provide evidence of having done some work yourself if posting questions from school or work assignments' which explains the DaniWeb community expectation pretty well I think.
So show us how far you have got yourself, with your code, and where you are getting stuck. Then I'm pretty sure you will find the community much more likely to point you in the right direction here.
I believe the WorldPay official docs have some examples for using their API. Personally I use Braintree and I'm very happy with them.
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