Additions to https://github.com/piotrplenik/clean-code-php

if (error) unhappy path;

happy path;

🖱️ https://szymonkrajewski.pl/why-should-you-return-early/

An array is a dumb container of unknown data. Arrays should be used to store lists: keyless elements of the same type. BTW strings are containers of unknown bytes.

🖱️ https://github.com/CuyZ/Valinor

The base value of an array is not null but [].

String manipulation including concatenation is the job of low level libraries as it is highly error prone.

💡 Creating messages for UI and logs is not string manipulation.

Explicit is better than implicit.

❌ if (state !== null)
✔️ if (state instanceof Resolver)

Have low-level libraries connect different languages.

• Main language + SQL: ORM
• Main language + HTML: template engine
• Main language + JavaScript: JSON
• Main language + CSS: use CSS classes and CSS variables

• Abstraction: strive to make deeper layers do the work, write less project-specific code.

• Be explicit! Implicit things need more brain work thus are error prone.

• There are only two hard things in Computer Science: cache invalidation and naming things.

  — Phil Karlton

  Gain knowledge of things, so you can name them.

Please consider supporting my work, as formulating the conclusions above takes at least several months.

Thank you!