A small description of the CORS issue, with simple solution written in PHP.
CROS policy "is a mechanism that uses additional HTTP header to inform a browser to allow a web application running at one origin (domain) have permission to access selected resources from a server at a different origin" Cross-Origin Resource Sharing (CORS) Policies by IBM
Thazt means when client trys to get content of another website (another URL) the Browser blocks this request if the reqest / response does not have special header:
Access-Control-Allow-Origin
With this header we can define all origin that can be allowed from the Browser. To allow all origin => Access-Control-Allow-Method: *
BASED ON: simple cors