Replace deprecated utf8_encode with mb_convert_encoding

Error: Function utf8_encode() is deprecated in /srv/esb/vendor/monolog/monolog/src/Monolog/Utils.php on line 179
Resolved with: Implementing Monolog\Utils::detectAndCleanUtf8() from Monolog version 2.8

.github/workflows/ci.yaml

@@ -68,7 +68,7 @@ jobs:
         run: composer install --no-interaction
 
       - name: Composer Require Checker
-        run: composer-require-checker
+        run: composer-require-checker --config-file=composer-require-checker.json
 
       - name: Run Easy Coding Standard
         run: vendor/bin/ecs check

composer-require-checker.json

@@ -1,3 +1,9 @@
 {
-  "scan-files" : ["bin/esb"]
+  "scan-files" : ["bin/esb"],
+  "symbol-whitelist": [
+    "null", "true", "false", "static", "self", "parent",
+    "array", "string", "int", "float", "bool", "iterable", "callable", "void", "object", "mixed", "never",
+
+    "mb_convert_encoding"
+  ]
 }

composer.json

@@ -38,6 +38,9 @@
         "symfony/deprecation-contracts": "^2.1",
         "amphp/http-server-form-parser": "^1.1"
     },
+    "suggest": {
+        "ext-mbstring": "*"
+    },
     "autoload": {
         "psr-4": {
             "Webgriffe\\Esb\\": ["src/"]

src/NonUtf8Cleaner.php

@@ -4,8 +4,6 @@
 
 namespace Webgriffe\Esb;
 
-use Monolog\Utils;
-
 /**
  * @internal
  */
@@ -17,13 +15,34 @@ class NonUtf8Cleaner
      */
     public static function clean(array $data): array
     {
-        array_walk_recursive($data, [Utils::class, 'detectAndCleanUtf8']);
+        array_walk_recursive($data, [__CLASS__, 'cleanString']);
         return $data;
     }
 
     public static function cleanString(string $data): string
     {
-        Utils::detectAndCleanUtf8($data);
-        return $data;
+        // Implementation borrowed from Monolog\Utils::detectAndCleanUtf8() which is no longer a public method as of version 2
+
+        if (preg_match('//u', $data)) {
+            return $data;
+        }
+
+        $data = preg_replace_callback(
+            '/[\x80-\xFF]+/',
+            function ($m) {
+                return function_exists('mb_convert_encoding') ? mb_convert_encoding($m[0], 'UTF-8', 'ISO-8859-1') : utf8_encode($m[0]);
+            },
+            $data
+        );
+
+        if (!is_string($data)) {
+            throw new \RuntimeException('Failed to preg_replace_callback: ' . preg_last_error());
+        }
+
+        return str_replace(
+            ['¤', '¦', '¨', '´', '¸', '¼', '½', '¾'],
+            ['€', 'Š', 'š', 'Ž', 'ž', 'Œ', 'œ', 'Ÿ'],
+            $data
+        );
     }
 }