Display current listeners using PHP

You would have to modify the connectioncounts (an HTTProvider) source to handle a querystring or form variable and filter on a stream name.

https://www.wowza.com/docs/how-to-get-connection-counts-for-server-applications-application-instances-and-streams-with-an-http-provider

See this article also:

https://www.wowza.com/docs/how-to-parse-post-or-get-variables-in-an-http-provider

You need the Wowza IDE:

http://wowza.com/ide.html

Richard