has been added to the php interface file:

header("Access-Control-Allow-Origin:*");
header("Access-Control-Allow-Headers: Origin, X-Requested-With, Content-Type, Accept");

however, the front end still reports an error when calling the interface to request data:

Failed to load http://aaa.com/version?test=1: Redirect from "http://aaa.com/version?test=1" to "http://bbb.com" has been blocked by CORS policy: No "Access-Control-Allow-Origin" header is present on the requested resource. Origin "http://ccc.com" is therefore not allowed access.