Extra strict and opinionated rules for PHPStan
PHPStan focuses on finding bugs in your code. But in PHP there's a lot of leeway in how stuff can be written. This repository contains additional rules that revolve around strictly and strongly typed code with no loose casting for those who want additional safety in extremely defensive programming:
- Require booleans in
if
,elseif
, ternary operator, after!
, and on both sides of&&
and||
. - Functions
in_array
andarray_search
must be called with third parameter$strict
set totrue
to search values with matching types only. - Variables assigned in
while
loop condition andfor
loop initial assignment cannot be used after the loop. - Types in
switch
condition andcase
value must match. PHP compares them loosely by default and that can lead to unexpected results. - Statically declared methods are called statically.
Additional rules are coming in subsequent releases!
Usage
To use these rules, require it in Composer:
composer require --dev phpstan/phpstan-strict-rules
And include rules.neon in your project's PHPStan config:
includes:
- vendor/phpstan/phpstan-strict-rules/rules.neon
Enabling rules one-by-one
If you don't want to start using all the available strict rules at once but only one or two, you can! Just don't include the whole rules.neon
from this package in your configuration, but look at its contents and copy only the rules you want to your configuration:
-
class: PHPStan\Rules\StrictCalls\StrictFunctionCallsRule
tags:
- phpstan.rules.rule
-
class: PHPStan\Rules\SwitchConditions\MatchingTypeInSwitchCaseConditionRule
tags:
- phpstan.rules.rule