redirect invalid forum and invalid thread to home page or index?

[marcus123]

Hi really need this one anyone?

How to make this work?

/ Add hooks here
$plugins->add_hook("showthread_end", "invalidthread");

// Plugin info
function invalidthread_info()
{
	return array(
		"name"			=> "invalidthread",
		"description"	=> "invalidthread",
		"website"		=> "invalidthread",
		"author"		=> "invalidthread",
		"authorsite"	=> "invalidthread",
		"version"		=> "1.0",
		"guid" 			=> "",
		"compatibility" => "16*"
	);
}


function invalidthread() {

	global $mybb, $thread, $lang;


	if ($l['error_invalidthread']) {
		error("working");
	}
}