What are some common pitfalls when dealing with cross-origin requests in PHP?

Common pitfalls when dealing with cross-origin requests in PHP include not setting the proper headers to allow cross-origin requests, which can lead to browsers blocking the requests for security reasons. To solve this issue, you need to set the appropriate headers in your PHP script to allow cross-origin requests from specific domains. 

<?php
header("Access-Control-Allow-Origin: http://example.com");
header("Access-Control-Allow-Methods: GET, POST, OPTIONS");
header("Access-Control-Allow-Headers: Content-Type");

Keywords

CORS Cross-origin requests Same-origin policy Access-Control-Allow-Origin AJAX

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