优化

@@ -349,6 +349,26 @@ class DbPool {
     }
 
 
+    /**
+     * 验证是否正常连接
+     * @return bool
+     * @author：dc
+     * @time 2024/4/10 10:09
+     */
+    public function ping(){
+        try {
+            $query = $this->getClient()->query("select 200;");
+            if($query->fetchColumn() == 200){
+                return true;
+            }
+        }catch (\Throwable $e){
+            return false;
+        }
+
+        return false;
+    }
+
+
 
     /**
      * @param $cid
@@ -360,6 +380,13 @@ class DbPool {
         if(empty(static::$instance[$cid])){
             static::$instance[$cid] = new DbPool($cid);
         }
+
+        if(!static::$instance[$cid]->ping()){
+            static::$instance[$cid]->close();
+
+            static::$instance[$cid] = new DbPool($cid);
+        }
+
         return static::$instance[$cid];
     }