Add daily email for 2024-05-05

Making PHPStan stricter

source/_daily_emails/2024-05-05.md

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+---
+title: Making PHPStan stricter
+date: 2024-05-05
+permalink: archive/2024/05/05/making-phpstan-stricter
+tags:
+    - software-development
+    - php
+    - phpstan
+cta: ~
+snippet: |
+    As well as PHP, you can make PHPStan stricter.
+---
+
+Continuing yesterday's thought on [strictness in PHP][yesterday], today I want to talk about adding more strictness to PHPStan.
+
+Adding the [PHPStan Strict Rules extension][extension] makes PHPStan stricter by adding new, more opinionated rules.
+
+For example:
+
+* Require booleans in if, elseif, ternary operator, after !, and on both sides of && and ||.
+* Use the `$strict` parameter with `in_array`, `array_search`, `array_keys` and `base64_decode`.
+* Disallow empty().
+* Require calling parent constructor.
+
+You can enable and disable rules as needed but, like setting the PHPStan level, ideally I like to enable them all by default and see how strict I go.
+
+It depends on the code being tested and the preference of the team, though I find the stricter the rules, the less bugs there are.
+
+[extension]: https://github.com/phpstan/phpstan-strict-rules
+[yesterday]: {{site.url}}/archive/2024/05/04/strict-typing-in-php