Cross-Origin Request Headers(CORS) with PHP headers

Question

I have a simple PHP script that I am attempting a cross-domain CORS request:

Answer 1

add this code in .htaccess

add custom authentication key's in header like app_key,auth_key..etc

Header set Access-Control-Allow-Origin "*"
Header set Access-Control-Allow-Headers: "customKey1,customKey2, headers, Origin, X-Requested-With, Content-Type, Accept, Authorization"