Initial commit，修正

vendor/yiisoft/yii2/helpers/VarDumper.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * @link https://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license https://www.yiiframework.com/license/
+ */
+
+namespace yii\helpers;
+
+/**
+ * VarDumper is intended to replace the buggy PHP function var_dump and print_r.
+ * It can correctly identify the recursively referenced objects in a complex
+ * object structure. It also has a recursive depth control to avoid indefinite
+ * recursive display of some peculiar variables.
+ *
+ * VarDumper can be used as follows,
+ *
+ * ```php
+ * VarDumper::dump($var);
+ * ```
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+class VarDumper extends BaseVarDumper
+{
+}