clear validate function in time

Author: fdreamsu

src/Controller.php

@@ -174,6 +174,7 @@ public function validate(): Controller {
         $this->par_validate->validate('URL', $this->par);
         $this->get_validate->validate('QUERY', $this->swoole_http_request->get);
         $this->post_validate->validate('POST', $this->swoole_http_request->post);
+        $this->par_validate = $this->get_validate = $this->post_validate = null;
         $this->get = $this->swoole_http_request->get;
         $this->post = $this->swoole_http_request->post;
         return $this;

src/Validator.php

@@ -61,7 +61,10 @@ public function validate($key, &$value) {
         $this->check($key, $value);
         if (method_exists($this, 'validate_function'))
             $this->validate_function($value);
-        foreach ($this->validate_function as $func)
+        while ( ! $this->validate_function->isEmpty() ) {
+            $func = $this->validate_function->dequeue();
             $func($value);
+            unset($func);
+        }
     }
 }