Calling a Function

Before you call any function, the software must first authenticate itself. Read Authentication section for more details. Once you authenticate, you are ready to use the API.
To call a function, you should specify at least the following parameters:

function

The name of the function.

token

The authentication token that you received on Authentication.   

data-format

One of xml or json, default is xml. This specifies format in which data will be sent and received.

In addition, you should specify the parameters required by the function you are calling. See the function reference for more details. On success, the X-Success HTTP header has the value 1 while in case of failure it has the value 0. An error message is present in the X-Error-Message header.

For examples, refer here.

For PHP, refer the sample file in the zip file here.