Summary: Migrating Existing PHP Apps to PHP 8

Key takeaways

• We were shown a typical 12-step PHP 8 migration procedure that ensures a greater chance of success when we are finally ready to upgrade the production environment. Each step is designed to spot potential code breaks, with fallback procedures in case something goes wrong.

• We also learned how to install PHP 8 on two common platforms, as well as how to easily revert to the older version. Finally, we learned about a number of free open-source tools that can assist in testing and troubleshooting.