I'm getting the error:
Notice: Undefined offset: 0 in __lambda_func() (line 2 of /drupal/sites/all/modules/views_php/plugins/views/views_php_handler_field.inc(202) : runtime-created function).
This only happens the second time the node is loaded (and all subsequent times) after the view has been re-saved, if that helps.
Also, the solution provided for this issue: http://drupal.org/node/1223184 also works here, so it's probably part of the same bug. Even though the bug occurs, the values returned are correct and everything works as intended.