add clear

wx/Recharge.php

@@ -8,6 +8,7 @@
 
 namespace wchat;
 
+use common\HttpClient;
 use common\Result;
 use common\Help;
 
@@ -172,7 +173,7 @@ class Recharge extends SmallProgram
 	private function send($url, $data)
 	{
 		$this->request->setIsSSL(true);
-		$this->request->setMethod(WxClient::POST);
+		$this->request->setMethod(HttpClient::POST);
 		$this->request->addHeader('Content-Type', 'text/xml');
 		return $this->request->send($url, $data);
 	}