Understanding development, staging, and production environments
The ultimate goal for a website update is to move the updated application code from development to production in as seamless a manner as possible. This movement of application code is referred to as deployment. Movement, in this context, involves copying application code and configuration files from one environment to another.
Before we get into the details of migrating an application to PHP 8, let's first have a look at what these environments are. Gaining an understanding of what form the different environments might take is critical to your role as a developer. With this understanding, you are in a better position to deploy your code to production with a minimal amount of errors.
Defining an environment
We use the word environment to describe a combination of software stacks that include the operating system, web server, database server, and PHP installation. In the past, the environment equated to a...