#3 Fix Method ReflectionParameter::getClass() is deprecated

As well as done:
- Add generic for $reflection_cache
- Add phpstan/phpstan-deprecation-rules checks
- Add case in a class for testing where we have default parameter as object.
- Add PHP8 to composer.json
- Increased PHPStan version up to PHP8.2

Makefile

@@ -1,3 +1,7 @@
 
-d.run:
-	docker run --rm -it -v "${PWD}":/usr/src/myapp -w /usr/src/myapp pimlab/composer:2.0.0-alpha3-php7.4 sh
+d.run74:
+	docker run --rm -it -v "${PWD}":/usr/src/myapp -w /usr/src/myapp pimlab/composer:2.0.0-alpha3-php7.4 sh
+
+
+d.run82:
+	docker run --rm -it -v "${PWD}":/usr/src/myapp -w /usr/src/myapp shopware/development:8.2-composer-2 bash

README.md

@@ -14,6 +14,7 @@ Simple PHP DI Container with autowiring in a single file allows you to easily us
 4. Supports Lazy Load class instantiating.
 5. Allow you following the best practices for developing your code.
 6. Supports PSR11 (read more about below).
+7. Supports PHP ^8 and PHP 7.4.
 
 ## How to integrate it in a project?
 1. Just copy the file `./src/Container.php` to your plugin directory or theme.
@@ -206,7 +207,7 @@ use Psr\Container\NotFoundExceptionInterface;
 - [x] Add resolved service storage (getting singleton).
 - [x] Add ability to create new instances of service every time.
 - [x] Improve performance.
-- [ ] Fix deprecated `Use ReflectionParameter::getType() and the ReflectionType APIs should be used instead.` for PHP8
+- [x] Fix deprecated `Use ReflectionParameter::getType() and the ReflectionType APIs should be used instead.` for PHP8
 - [ ] Circular dependency protector.
 - [ ] Allow to set definitions via `__constructor`.
 - [ ] Bind $container instance by default.

composer.json

@@ -11,12 +11,14 @@
     ],
     "minimum-stability": "stable",
     "require": {
-        "php": "^7.4"
+        "php": "^7.4|^8"
     },
     "require-dev": {
         "phpunit/phpunit": "^9.6.13",
         "symfony/var-dumper": "^5.4",
-        "phpstan/phpstan": "^1.10"
+        "phpstan/phpstan": "^1.10",
+        "phpstan/extension-installer": "^1.3",
+        "phpstan/phpstan-deprecation-rules": "^1.1"
     },
     "autoload-dev": {
         "psr-4": {
@@ -30,5 +32,10 @@
         "phpstan": "phpstan analyse -c phpstan.neon",
         "phpstan.baselane": "phpstan analyse -c phpstan.neon --generate-baseline",
         "phpunit": "phpunit"
+    },
+    "config": {
+        "allow-plugins": {
+            "phpstan/extension-installer": true
+        }
     }
 }