改进Validate类 支持静态调用 可用于单独的验证规则

library/think/Validate.php

@@ -11,6 +11,7 @@
 
 namespace think;
 
+use think\Exception;
 use think\Input;
 use think\Request;
 
@@ -1107,4 +1108,14 @@ class Validate
         }
         return $scene;
     }
+
+    public static function __callStatic($method, $params)
+    {
+        $class = new static;
+        if (method_exists($class, $method)) {
+            return call_user_func_array([$class, $method], $params);
+        } else {
+            throw new Exception(__CLASS__ . ':' . $method . ' method not exist');
+        }
+    }
 }