ONE MODULE AT A TIME
Namespaces, enums and iterable data
Load namespaced code, define state contracts and process iterable data deliberately.
Professional PHP
PHP namespaces and Composer PSR-4 autoloading
Separate class names, aliases, paths and dependency resolution with a real isolated Composer example.
Professional PHPPHP enums and explicit state transitions
Distinguish recognized state values from permitted changes and keep authorization/concurrency separate.
Professional PHPPHP iterable data, generators and failure timing
Aggregate validated rows in one pass while distinguishing lazy work, source memory and one-shot traversal.