Snippet - how to make the contact ID of logged in user an argument for views

Here's a quick snippet to paste in as a default argument for Views to use the contact ID for the logged in user as an argument. To use this add a field as an argument & choose provide default argument / php code. If you don't see these options it may be a permissions thing

// Make the first argument 1 if not already set
if (!$args[0]) {
$args[0] = 1;
}

global $user;
if (module_exists('civicrm')) {
$sql = "SELECT contact_id FROM {civicrm_uf_match} WHERE uf_id = %d";
$args[0] = db_result(db_query($sql,array($user->uid)));
}

return $args;