Verification: a143cc29221c9be0

Php api access control allow origin

Determining whether to enable CORS support

A cross-origin HTTP request is one that is made to:

  • A different domain (for example, from to

  • A different subdomain (for example, from to

  • A different port (for example, from to

  • A different protocol (for example, from to

Cross-origin HTTP requests can be divided into two types: simple requests and non-simple requests.

An HTTP request is simple if all of the following conditions are true:

  • It is issued against an API resource that allows only GET, HEAD, and POST requests.

  • If it is a POST method request, it must include an Origin header.

  • The request payload content type is text/plain, multipart/form-data, or application/x-www-form-urlencoded.

  • The request does not contain custom headers.

  • Any additional requirements that are listed in the Mozilla CORS documentation for simple requests.

For simple cross-origin POST method requests, the response from your resource needs to include the header Access-Control-Allow-Origin, where the value of the header key is set to '*'(any origin) or is set to the origins allowed to access that resource.

All other cross-origin HTTP requests are non-simple requests. If your API's resources receive non-simple requests, you need to enable CORS support.