Add the phpstan/phpstan-strict-rules package

Adds additional rules for PHPStan to make it more strict.

Signed-off-by: Maurício Meneghini Fauth <mauricio@fauth.dev>

composer.json

@@ -100,8 +100,9 @@
         "php-webdriver/webdriver": "^1.11",
         "phpmyadmin/coding-standard": "^3.0.0",
         "phpstan/extension-installer": "^1.1",
-        "phpstan/phpstan": "^1.4.8",
+        "phpstan/phpstan": "^1.8",
         "phpstan/phpstan-phpunit": "^1.0",
+        "phpstan/phpstan-strict-rules": "^1.4",
         "phpstan/phpstan-webmozart-assert": "^1.0",
         "phpunit/phpunit": "^8.5 || ^9.5",
         "pragmarx/google2fa-qrcode": "^2.1",

phpstan.neon.dist

@@ -22,3 +22,10 @@ parameters:
     dynamicConstantNames:
         - ROOT_PATH
         - VERSION_SUFFIX
+    strictRules:
+        # Allow non-booleans in conditions.
+        booleansInConditions: false
+        # Allow the empty() construct.
+        disallowedConstructs: false
+        # Allow dynamic calls to static methods.
+        strictCalls: false