Are there any tools or profilers available for understanding script runtime in PHP?

One way to understand script runtime in PHP is to use profiling tools such as Xdebug or Blackfire. These tools can help identify bottlenecks and optimize code for better performance. By analyzing the output generated by these profilers, developers can gain insights into which parts of their script are taking the most time to execute.

// Example code using Xdebug for profiling
xdebug_start_profiling();

// Your PHP script here

xdebug_stop_profiling();