I think there's actually some pretty decent PHP monitoring love these days!
1. A little plug for TraceView, a PHP performance monitoring and distributed tracing product. Not only insight as to what your PHP code is doing, but also what external services it is interacting with, which ones are slow, and (if they're other services you run) end-to-end traces between them (including software written in 7 other languages). (https://traceview.solarwinds.com)
2. New Relic offers a PHP solution, which is a bit pricier but also folds into their ever-growing suite of products. https://newrelic.com
3. Tideways is pretty cool as well (someone mentioned that already) and it supports HHVM. https://tideways.io
4. If you're looking for just profiling, there's https://blackfire.io, though I don't know much about it.
5. AppDynamics has a PHP monitoring product but I can't recommend it unless you are looking for on-prem hosted solution.
1. A little plug for TraceView, a PHP performance monitoring and distributed tracing product. Not only insight as to what your PHP code is doing, but also what external services it is interacting with, which ones are slow, and (if they're other services you run) end-to-end traces between them (including software written in 7 other languages). (https://traceview.solarwinds.com)
2. New Relic offers a PHP solution, which is a bit pricier but also folds into their ever-growing suite of products. https://newrelic.com
3. Tideways is pretty cool as well (someone mentioned that already) and it supports HHVM. https://tideways.io
4. If you're looking for just profiling, there's https://blackfire.io, though I don't know much about it.
5. AppDynamics has a PHP monitoring product but I can't recommend it unless you are looking for on-prem hosted solution.
And there's probably several more...