基类和工具类

app/BaseApp/BaseClient.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\BaseApp;
+
+class BaseClient
+{
+    private static mixed $_instance;
+
+
+    /**
+     * 获取实例
+     * @return null|static
+     */
+    public static function getInstance(): null|static
+    {
+        $name = get_called_class();
+        if (!isset(self::$_instance[$name])) {
+            self::$_instance[$name] = new static();
+        }
+
+        return self::$_instance[$name];
+    }
+}