Update CI to check against PHP 8.1 (#4)

* Update CI to check against PHP 8.1

* Fixed PHPStan

.circleci/config.yml

@@ -12,6 +12,11 @@ executors:
       - image: php:8.0-cli
     working_directory: ~/repo
 
+  php81:
+    docker:
+      - image: php:8.1-cli
+    working_directory: ~/repo
+
 ## COMMANDS
 commands:
 
@@ -144,6 +149,17 @@ jobs:
       - restore-composer-cache
       - phpunit
 
+  composer81:
+    executor: php81
+    steps:
+      - store-composer-cache
+
+  phpunit81:
+    executor: php81
+    steps:
+      - restore-composer-cache
+      - phpunit
+
 ## WORKFLOWS
 workflows:
   Code quality PHP 7.4:
@@ -166,4 +182,10 @@ workflows:
       - composer80
       - phpunit80:
           requires:
-            - composer80
+            - composer80
+  Code quality PHP 8.1:
+    jobs:
+      - composer81
+      - phpunit81:
+          requires:
+            - composer81

composer.json

@@ -24,7 +24,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^9.5",
-    "phpstan/phpstan": "^0.12.71",
+    "phpstan/phpstan": "^0.12",
     "phpstan/phpstan-deprecation-rules": "^0.12.6",
     "phpstan/phpstan-phpunit": "^0.12.17",
     "phpstan/phpstan-strict-rules": "^0.12.9",

src/Core/PhpCore.php

@@ -97,7 +97,7 @@ public function strSplit(string $string, int $length, string $what, string $extr
             $data = false;
         }
 
-        if (false === is_array($data) || 0 === count($data)) {
+        if (false === $data) {
             $error = "Impossible to splint the given string of type: '$what'";
             $error = $extra === '' ? $error : $error . ' at ' . $extra;
             $error .= " $msg";