How do you test and debug your code during and after the migration process?

1 Prepare your environment

Before you start the migration, you need to prepare your environment for both Zend Framework and Symfony. You should have a local development server that can run both frameworks, and a version control system that can track your changes and revert them if needed. You should also have a backup of your database and files, and a staging server where you can test your code before deploying it to production. Having a clear and consistent environment will make your migration easier and safer.

2 Use unit testing

Unit testing is a way of testing your code by writing small and isolated tests that check the functionality of a single unit of code, such as a class, a method, or a function. Unit testing can help you verify that your code behaves as expected, and detect any errors or bugs early. Zend Framework and Symfony both support unit testing with PHPUnit, a popular testing framework for PHP. You can use PHPUnit to write and run unit tests for your code in both frameworks, and compare the results to see if there are any differences or issues.

3 Use code analysis

Code analysis is a way of checking your code for quality, performance, style, and security issues. Code analysis can help you improve your code, follow best practices, and avoid common pitfalls. Zend Framework and Symfony both provide tools and standards for code analysis, such as PHP_CodeSniffer, PHPStan, and PSR. You can use these tools to analyze your code in both frameworks, and fix any problems or warnings that they report.

4 Use debugging tools

Debugging tools are tools that help you find and fix errors or bugs in your code. Debugging tools can help you inspect your code, track variables, breakpoints, and exceptions, and modify your code on the fly. Zend Framework and Symfony both offer debugging tools, such as Zend Debugger, Xdebug, and Symfony VarDumper. You can use these tools to debug your code in both frameworks, and see what is happening behind the scenes.

5 Use logging and monitoring

Logging and monitoring are ways of recording and observing your code's behavior and performance. Logging and monitoring can help you identify and troubleshoot any issues or anomalies that occur in your code. Zend Framework and Symfony both support logging and monitoring with tools such as Monolog, Symfony Profiler, and Symfony Web Debug Toolbar. You can use these tools to log and monitor your code in both frameworks, and access useful information and metrics about your code.

6 Test your migration

After you finish the migration, you need to test your code thoroughly to make sure that everything works as expected and that there are no errors or bugs. You should test your code on different levels, such as functional testing, integration testing, acceptance testing, and regression testing. You should also test your code on different environments, such as staging and production. You should use automated testing tools, such as Behat, Codeception, or Selenium, to perform these tests efficiently and reliably.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?