because you don’t return JSON, you can use admin-post.php. create a hook like that : add_action(“admin_post_nopriv_MY_PLUGIN__answer”, function () { header(“Content-type: text/xml”); echo “<abc><def>1</def></abc>”; exit(); }); and then use the url /wp-admin/admin-post.php?action=MY_PLUGIN__answer. when you do debugging, don’t forget that admin_post_nopriv only answers on unconnected users then you can open the url in another browser.
WordPress Custom API GET request from External App with XML Parameter
From the xmlrpc_enabled filter docs: Contrary to the way it’s named, this filter does not control whether XML-RPC is fully enabled, rather, it only controls whether XML-RPC methods requiring authentication – such as for publishing purposes – are enabled. To fully disable XMLRPC, you might be able to use the xmlrpc_methods filter and return an … Read more
Update HTML text automatically from file
Your question seems like a false dichotomy. If you use a REST API to access the data, it has to be returned in some format, and that format will often be XML.
Disabling options for xml feeds
Importing content but it displays that it already exists
XML WP_Query problem in PHP 8.0 and 8.1
Sound like an interesting, but I think it would be very difficult, because content is more than just posts: Post authors for the demo content must match existing users. Taxonomies (tags, categories, nav menus) are bound to existing content. Comments need proper associations with post IDs and post types. One way to do what you … Read more
Safe XML response from wordpress plugin