How can cross-origin resource sharing (CORS) be implemented when including content from multiple servers in a PHP application?

Cross-origin resource sharing (CORS) can be implemented in a PHP application by setting the appropriate headers to allow requests from other domains. This can be done by adding the necessary headers in the PHP script that serves the content, allowing the browser to make cross-origin requests. 

<?php
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Methods: GET, POST, OPTIONS");
header("Access-Control-Allow-Headers: Content-Type");

Keywords

CORS Cross-Origin Resource Sharing PHP application multiple servers implementation

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