Modernize: Config: use class constant for constant array [2]

Author: jrfnl

src/Config.php

@@ -134,6 +134,18 @@ class Config
         'markdown' => 'Markdown',
     ];
 
+    /**
+     * The default configuration file names supported by PHPCS.
+     *
+     * @var array<string> The supported file names in order of precedence (highest first).
+     */
+    private const CONFIG_FILENAMES = [
+        '.phpcs.xml',
+        'phpcs.xml',
+        '.phpcs.xml.dist',
+        'phpcs.xml.dist',
+    ];
+
     /**
      * An array of settings that PHPCS and PHPCBF accept.
      *
@@ -426,15 +438,8 @@ public function __construct(array $cliArgs=[], $dieOnUnknownArg=true)
             // Look for a default ruleset in the current directory or higher.
             $currentDir = getcwd();
 
-            $defaultFiles = [
-                '.phpcs.xml',
-                'phpcs.xml',
-                '.phpcs.xml.dist',
-                'phpcs.xml.dist',
-            ];
-
             do {
-                foreach ($defaultFiles as $defaultFilename) {
+                foreach (self::CONFIG_FILENAMES as $defaultFilename) {
                     $default = $currentDir.DIRECTORY_SEPARATOR.$defaultFilename;
                     if (is_file($default) === true) {
                         $this->standards = [$default];