I'm using Simplenews Scheduler to automatically send a digest of new nodes, by inserting a views token into Body field of the newsletter.
I need to prevent sending the newsletter if the View in question is empty (triggers No results).
Simplenews Scheduler allows for PHP evaluation (see at the bottom of the screenshot):
What do I need to enter there to ensure no new newsletter is created and sent if a certain view (with certain exposed filter or contextual filters options) has no results?