There are many problems when developing websites or web applications. One of the most annoying is the fact that sometimes the results of the application are not the same as the expectations. This is why it is very important to test your application in as many ways as possible.

The easiest way to do this is to use a code testing tool. There are many of them available online. Some of them are free, and some of them are not. The best thing is that they are all easy to use.

ServePHP is a free code testing tool that works in the Chrome DevTools. It is an extension that can be downloaded for the Chrome browser.