PHP · Expert

Lesson 1 · On the house

Enums

Pure vs backed, cases, from/tryFrom, methods.

Lesson 2

Attributes

#[Attribute], targets, ReflectionAttribute.

Lesson 3

Fibers

Fiber start/resume/suspend — cooperative, not threads.

Lesson 4

Readonly deep

Readonly properties/classes, init rules, clone caveats.

Lesson 5

First-class callables

strlen(...), method refs, array_map.

Lesson 6

Match and throw expressions

Match arms, exhaustiveness idea, throw as value.

Lesson 7

WeakReference and WeakMap

Weak refs, WeakMap keys, GC intent.

Lesson 8

Reflection

ReflectionClass/Method, invoke, attributes bridge.

Lesson 9

SPL iterators

IteratorAggregate, ArrayIterator, iterator_to_array.

Lesson 10

Expert capstone

Backed enum + attribute + reflection readout.