Help for WorldPay..!

[Pushp]

Hello,

I am PHP Programmer. I want to know that how to implement Worldpay
Gateway for electronic payment. Plese tell me how to grab the response
in case of failure or wrong card no. Please send me some example
script. Although I have visited worldpay site for invisible
transaction but unable to find any script or proper solution for PHP.
I have all the requried parameter values and I want to post these
values to Worldpay and want to perform certain action based on the
response.
I want to implement this using CURL, I am trying but unable to get the
success.
Please tell me how to do it...!
Hope You Great People help me in this crisis.
I am in crisis hope you people will me to out.
Hope a prompt help.

PK..!