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Using the Access-Control-Allow-Origin Header
This guide helps you set up the "Access-Control-Allow-Origin" header, an HTTP header that specifies which origin (domain, protocol, and port) can access resources on a server. This header is used to control cross-origin access (CORS) from a web application.
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List of Allowed Domains
You can add the origin of a request to the list of allowed domains that can access the server's resources by adding it to the values of the Access-Control-Allow-Origin header.
To allow, for example, the site https://domain.xyz to access resources with CORS, the header should look like this:
Access-Control-Allow-Origin: https://domain.xyzYou can set it using the header() function in PHP by referring to this guide in particular.
If you need this header to be applied everywhere, you can use an auto-prepend.
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