Tuning PHPStan to Maximum Strictness

Besides the traditional rule levels 0 through 9 (https://phpstan.org/user-guide/rule-levels) which allow developers to adopt PHPStan incrementally while increasing the strictness gradually, the static analyser offers plenty of other configuration options to look at the code with a critical eye.

In this talk I’ll show you these options with examples of practical impact on your code. It will become more predictable and readable.