A PHP profiler that monitors your production environment not only makes performance optimization effective and efficient but also finds out the effect of your optimization efforts on your end users.
AppDynamics for PHP tracks and identifies issues in your production PHP application without impacting performance.
AppDynamics lets you locate issues in your production application quickly by automatically discovering your application architecture that includes your remote web service and database calls and your own application servers. The application architecture is then displayed in the Application Flowmap.
AppDynamics baselines your traffic into Business Transactions that let you swiftly understand the impact on end users when performance suffers. Not only that, it allows you get the associated call stack traces and quickly identify the main cause for the performance issues. This capability is not seen in many PHP management solutions,
AppDynamics' powerful analytics engine helps you comprehend application performance trends over time and build intuitive dashboards for the executives and other teams to watch.
When new codes are released, AppDynamics make application performance comparisons before and after a code release to see the impact of new code on performance.
Many PHP management tools give alerts but not like that of AppDynamics. Instead of static, global thresholds of most PHP tools that often lead to inaccurate alerts, AppDynamics' intelligent baselines alert you only about real performance issues.
For more details, try PHP monitoring for free.