微信开放平台 获取 component_verify_ticket

<?php
/**
 * @author zhaozhuobin
 * @date:2016-06=07
 *
 */

namespace common\components;use DOMDocument;
use WXBizMsgCrypt;
use yii\base\Action;
use Yii;

/**
 *  获取微信 component_verify_ticket
 *
 * <xml>
 *   <AppId> AppId</AppId>
 *   <CreateTime> 1413192605 </CreateTime>
 *   <InfoType> component_verify_ticket </InfoType>
 *   <ComponentVerifyTicket> 内容 </ComponentVerifyTicket>
 * </xml>
 *
 * Class WechatAction
 * @package common\components
 */
class WechatAction extends  Action
{

    public $openWechat;

    /**
     * @return string|void
     */
    public function run()
    {
        $this->openWechat = Yii::$app->openWechat;
        $param = $this->getParam();
        $encryptMsg = file_get_contents('php://input');$result = $this->getVerify_Ticket($param['timestamp'],$param['nonce'],$param['msg_signature'],$encryptMsg);
        if($result){
            return "success";
        }
    }

    /**
     * 获取参数
     * @return array|mixed
     */
    public function getParam()
    {
        $param = Yii::$app->request->get();
        $param['timestamp'] = empty($param['timestamp']) ? "" : trim($param['timestamp']);
        $param['nonce'] = empty($param['nonce']) ? "" : trim($param['nonce']);
        $param['msg_signature'] = empty($param['msg_signature']) ? "" : trim($param['msg_signature']);
        $param['signature'] = empty($param['signature']) ? "" : trim($param['signature']);
        return $param;
    }

    /**
     * 获取 component_verify_ticket
     * @param $timeStamp
     * @param $nonce
     * @param $msg_sign
     * @param $encryptMsg
     * @return bool
     */
    public function getVerify_Ticket($timeStamp, $nonce, $msg_sign, $encryptMsg)
    {
        @include_once (dirname(__DIR__).'/messageCrypt/wxBizMsgCrypt.php');
        $pc = new WXBizMsgCrypt($this->openWechat->token, $this->openWechat->encodingAesKey, $this->openWechat->appId);

        $xml_tree = new DOMDocument();
        $xml_tree->loadXML($encryptMsg);
        $array_e = $xml_tree->getElementsByTagName('Encrypt');
        $encrypt = $array_e->item(0)->nodeValue;

        $format = "<xml><ToUserName><![CDATA[toUser]]></ToUserName><Encrypt><![CDATA[%s]]></Encrypt></xml>";

        $from_xml = sprintf($format, $encrypt);

        $msg = '';

        $errCode = $pc->decryptMsg($msg_sign, $timeStamp, $nonce, $from_xml, $msg);

        if ($errCode == 0) {
            $xml = new DOMDocument();
            $xml->loadXML($msg);
            $array_e = $xml->getElementsByTagName('ComponentVerifyTicket');
            $component_verify_ticket = $array_e->item(0)->nodeValue;

            //=======这里把 component_verify_ticket 保存到数据库========//

            return true;
        }else{
            //=======这里记录错误码========//
            return false;
        }
    }
}