PasteBin

<?php
// We just start, and we are already preparing to shutdown.
// !!! This file is called via php_admin_value auto_prepend_file
register_shutdown_function('sm_shutdown_function');
 
// The fun never ends.
function sm_shutdown_function()
{
	// Make a clean getaway.
	$contents = ob_get_contents();
	ob_clean();
 
	// First we find out if we are going to be redirecting and fix that.
	$headers = headers_list();
	foreach ($headers as $key => $value)
	{
		if (strpos($value, 'Location:') === false)
			continue;
 
		header('Location:' . strtr($value, array(
			'mydomain.com' => 'foobar.test',
		)));
	}
 
	// Inject something and act like nothing happened.
	$contents = str_replace('mydomain.com', 'foobar.test', $contents);
	echo $contents;
	exit;
}
 
?>