[support] extracting author's UID from URL for use in a block

[Fred Jones]

> I thought I could use args to extract the UID from the URL but when I print
> out all arguments in the block as a test, I get only "node" and "389" so
> it's not seeing the PathAuto URL but the system URL.

Correct.

To get the uid use node_load to load the node details. If you use
print_r() to examine the results, you will see that uid is one of the
entries in the returned array. So something like:

$node = node_load(arg(1));
$uid = $node['uid'];

HTH