For the last month I worked mostly on flow-php/telemetry library and finally you can give it a try.
If you heard about Open Telemetry but never had a chance to play with it, I prepared something for you:
https://flow-php.com/telemetry/tracer/#example
Just click a run button (top right corner of the code snippet) and execute that snippet in the browser 🤯
Examples are configured to use console exporters for signals, so you will see what would normally go to OTEL Collector / APM