Q:

how to call a PHP web service from Node.js

how can i call a PHP web service from node.js . thanks in advance.

A:

You can use node-httpclient to perform get requets to any server, not necceserialy PHP.
var client = new httpcli.httpclient();  
var url = "http://domain.com/get/bananas"
client.perform(url, "GET", function(result) {
// Result is the response of the server
}, null);

