How do you use BLOCK_VISIBILITY_PHP, in hook_block_info, to hide a block?
I put this in my php code and it works just right:

&lt;?php drupal_set_message("here"); global $user; if ($user-&gt;uid == 1) { return 0; } else { return 1; } ?&gt;


The drupal_set_message is called and everything.