Which versions of PHP have you worked with? The earliest and the latest.

In working with PHP, different versions are often encountered depending on the project and requirements:

• The earliest versions I might have worked with are PHP 5.3 or 5.4. These introduced namespaces, anonymous functions, and improved OOP support.

• The latest versions are PHP 8.x (for example, 8.0, 8.1, 8.2). They add new features: union types, attributes, performance improvements, JIT compilation, and enhanced typing.

Experience with different versions allows considering syntax features, function support, and optimizing code for a specific PHP version.