Develop a simple SOAP Api & Store response in a csv file

I want to develop a simple php script with soap 1.1 or 1.2 that sends requests and fetches the response from soap server. Response from server are in XML format. But i want those responses to be stored in a single CSV file., Even it is 1 response or 2 responses. You can work from your development server and show me if it works perfect. My budget is USD $60. I will upload the milestone payment immediately to freelancer escrow. Will release it after I see 100% it is working. API Documentation is., [login to view URL] [login to view URL] [login to view URL] I will give you the api keys. All you need to do is., Code above 3 apis in simple php script and store responses in a csv file with a heading column on it.