Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Learning PHP 7 High Performance

You're reading from   Learning PHP 7 High Performance Improve the performance of your PHP application to ensure the application users aren't left waiting

Arrow left icon
Product type Paperback
Published in Apr 2016
Publisher Packt
ISBN-13 9781785882265
Length 202 pages
Edition 1st Edition
Languages
Arrow right icon
Author (1):
Arrow left icon
Iltaf (Altaf) Hussain Gul Iltaf (Altaf) Hussain Gul
Author Profile Icon Iltaf (Altaf) Hussain Gul
Iltaf (Altaf) Hussain Gul
Arrow right icon
View More author details
Toc

Table of Contents (11) Chapters Close

Preface 1. Setting Up the Environment FREE CHAPTER 2. New Features in PHP 7 3. Improving PHP 7 Application Performance 4. Improving Database Performance 5. Debugging and Profiling 6. Stress/Load Testing PHP Applications 7. Best Practices in PHP Programming A. Tools to Make Life Easy B. MVC and Frameworks Index

Profiling with Xdebug


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...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at $19.99/month. Cancel anytime
Banner background image