I'm using Panels to overwrite node template (node/%node). I would like the system to use specific variant when a node is loaded. E.g. node 123 should use variant A and node 223 should use variant B. There isn't an option for me to determine that under Selection rules, I'm wondering if I should use PHP Code, and if I do, how should I go about writing the code?
I'm aware of the option of using Panels Node, but by using it, there is no easy way to edit the node thus rendering it a less than desirable choice.
In this case the easiest thing is probably to throw in some PHP code. It would be prettier to make an extension to the Panels selection rules, but this might be a bit overkill in this case.
Anyways something like
return arg(1) == 123;
should do it.
Your problem is probably Drupal/Panel cache. I just tested it, and it works fine.