In a new post to his site Rob Allen provides the steps you'll need to follow to use the Serverless Framework toolkit with OpenWisk to host PHP-based applications.
Serverless Framework is a toolkit to help you mange and deploy a serverless application. (Personally, I'm not a fan of the name as the word "Serverless" already has a meaning in the same space!) It's a useful tool and supports all the major providers, though AWS Lambda seems to be first-among-equals. The OpenWhisk plugin for Serverless is maintained by the rather excellent James Thomas, so if you have any questions, ping him!
As I build more complex PHP based OpenWhisk applications, I thought I'd explore how Serverless makes this easier.
He starts with helping you get the Serverless framework and the related OpenWisk plugin installed. He then helps you create a project, modify the configuration for a simple "Hello world" kind of script and create the PHP script to act as an endpoint. With the setup complete, he includes the steps to deploy and run the project, invoking the action and enabling it (as a Web Action) to make it reachable via the web.