Profiling gives us information about the cost of each script or task executed in an application. It helps to provide information about how much time a task takes, and hence we can optimize our code to consume less time.
Xdebug has a profiler that is disabled by default. To enable the profiler, open the configuration file and place the following two lines in it:
xdebug.profiler_enable=on xdebug.profiler_output_dir=/var/xdebug/profiler/
The first line enables the profiler. The second line, where we defined the output directory for the profiler file, is important. In this directory, Xdebug will store the output file when the profiler is executed. The output file is stored with a name, such as cachegrind.out.id. This file contains all the profile data in a simple text format.
Now, we are set to profile a simple installation of the Laravel application home page. The installation is a fresh and clean one. Now, let's open the application in a browser and append ?XDEBUG_PROFILE...