codeigniter_tutorial

20. Application Profiling
CodeIgniter
When building a web application, we are very much concerned about the performance of
the website in terms of how much time the controller took to execute and how much
memory is used. Not only the performance, but we also need to see the insights of data
like POST data, data of database queries, session data etc. for debugging purpose while
developing some application. CodeIgniter has made this job easier for us by profiling an
application.
Enable Profiling
To enable profiling of your application, simply execute the command given below in any
of the method of your controller.
$this->output->enable_profiler(TRUE);
The report of the profiling can be seen at the bottom of the page after enabling it.
Disable Profiling
To disable profiling of your application, simply execute the command given below in any
of the method of your controller.
$this->output->enable_profiler(FALSE);
Enable / Disable Profiler Section
Profiling can be done on section basis. You can enable or disable profiling of a section by
setting a Boolean value TRUE or FALSE. If you want to set profiling on the application
then you can do in a file located in application/config/profiler.php
For example, the following command will enable profiling queries for the whole
application.
$config['queries'] = TRUE;
In the following table, the key is the parameter, which can be set in the config array to
enable or disable a particular profile.
Key Description Default
benchmarks
Elapsed time of Benchmark points and total TRUE
execution time
config CodeIgniterConfig variables TRUE
controller_info The Controller class and method requested TRUE
get Any GET data passed in the request TRUE
http_headers The HTTP headers for the current request TRUE
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