How to receive xml requests and send response xml in php?

Question

So I need to build an application that will receive xml request and based on that I will have to return the response xml. I know how to send requests and receive the response, b

Answer 1

The general idea is to read in the POST value, parse it as XML, make a business decision on it, build out an XML response according to the API you've decided on, and write it into the response.

Read in the POST value:

$dataPOST = trim(file_get_contents('php://input'));

Parse as XML:

$xmlData = simplexml_load_string($dataPOST);

Then, you would build out an XML string (or document tree, if you wish), and print it out to the response. print() or echo() will do fine.