Visualitzar un block només a un tipus de contingut

Not sure if I'm being too reckless, but this seems to be working fine for me, and it certainly looks more efficient in my eyes:

<?php
  $node = node_load(arg(1));
  $type = $node->type;
  return in_array($type,array('my_content_type'));
?>

My PHP coding background is certainly more developed than my Drupal background, so please let me know if I'm doing something I shouldn't be doing!

 

Més exemples i explicacions a: http://drupal.org/node/134425