In this chapter, we discussed a few load testing and benchmarking tools, such as JMeter, ApacheBench (ab), and Siege. We used each tool to load test, and discussed the output and what it means. Finally, we load tested three famous open source applications, Magento 2, WordPress 4, and Drupal 8, and created graphs for each application's transactions per second in both PHP 7 and PHP 5.6.
In the next chapter, we will discuss best practices for PHP development. These practices are not limited only to PHP and can be used for any programming language.