Plugin that lets you share Wordpress sites through Expose (expose.dev)

gistfile1.txt

<?php
// phpcs:ignoreFile

define( 'EXPOSED_DOMAIN', 'xxx.sharedwithexpose.com' );
define( 'REAL_DOMAIN', 'mydomain.test' );

// Load only if we are running under Expose.
if ( empty( $_SERVER['HTTP_X_ORIGINAL_HOST'] ) || strpos($_SERVER['HTTP_X_ORIGINAL_HOST'], EXPOSED_DOMAIN) === false) {
	return;
}

ob_start(function($buffer) {
	return str_replace(REAL_DOMAIN, EXPOSED_DOMAIN, $buffer);
});

add_action('shutdown', function() {
	ob_end_flush();
});