PHP Agent for Elastic APM – This is a community PHP agent for Elastic.co’s APM solution.

Source: philkra/elastic-apm-php-agent: PHP Agent for Elastic APM

Open source Application Performance Monitoring

Already housing logs and system metrics in Elasticsearch? Expand to application metrics with free and open Elastic APM. See exactly where your application is spending time so you can quickly fix issues and feel good about the code you push.

And PHP APM agent

Source: Application Performance Monitoring (APM) with Elasticsearch | Elastic