Loving the product so far - thank you! 
Feature request to add more configuration options to PHP like you support for Java. Most needed toggles are:
- span_min_duration
- span_frames_min_duration
- ignore_urls
- transaction_ignore_urls
This will allow us to cut down the unimportant actions like health checks and minor internal operations.
Checking github I do see a related request for part of this: Configuration option: TRANSACTION_IGNORE_URLS · Issue #82 · elastic/apm-agent-php · GitHub
Just calling it out here, too, in case it helps raise priority!