微信公众号整套逻辑的支付和退款

都已经做两遍公众号了，还是有时候总卡壳，今天把所有的问题都遇到的差不多了，咱就好好的总结总结

先说支付问题

申请下来公众号后，先将后台该填的都填写好

需要用到的公众号信息

 

下面就开始要进入代码状态了

先说支付：

 

 需要放在function.php 里的方法

吊起微信支付最重要的方法（一）

/**
 * 直接生成微信jssdk_config
 * @echo string $jssdk Jssdk_config
 * @author 5heAtMin9 <sheatming@foxmail.com>
 */

function wx_jssdk_config($debug='true'){
    $getSignPackage = wx_getSignPackage();
    $jssdk = '<script src="https://res.wx.qq.com/open/js/jweixin-1.0.0.js"></script>';
    $jssdk .= '<script>
    wx.config({
        debug: '.$debug.', 
        appId: "'.$getSignPackage['appId'].'",
        timestamp: "'.$getSignPackage['timestamp'].'",
        nonceStr: "'.$getSignPackage['nonceStr'].'",
        signature: "'.$getSignPackage['signature'].'",
        jsApiList: ["checkJsApi","onMenuShareTimeline","onMenuShareAppMessage","onMenuShareQQ", "onMenuShareWeibo","onMenuShareQZone","hideMenuItems","showMenuItems","hideAllNonBaseMenuItem","showAllNonBaseMenuItem","translateVoice","startRecord","stopRecord","onVoiceRecordEnd","playVoice","onVoicePlayEnd","pauseVoice","stopVoice","uploadVoice","downloadVoice","chooseImage","previewImage","uploadImage","downloadImage","getNetworkType","openLocation","getLocation","hideOptionMenu","showOptionMenu","closeWindow","scanQRCode","chooseWXPay","openProductSpecificView","addCard","chooseCard","openCard"],
    });
</script>';
    echo $jssdk;
}

吊起微信支付最重要的方法（二）

/**
 * 微信支付
 * @param string $openid 支付者openid
 * @param string $url 回调地址
 * @param string $od_title 订单标题
 * @param string $od_money 价格
 * @param string $od_id 订单编号
 * @return string 状态
 * @author 5heAtMin9 <sheatming@foxmail.com>
 */
function wx_h5_pay($openid, $url, $od_title,  $od_money, $od_id)
{
    
    if(is_null($url) || $url == ''){
        $url = 'http://'. $_SERVER['HTTP_HOST'].'/weixinpay/notify_url.php';
    }
    $pay = array(
        'appid' => C('WX_APPID'),
        'mch_id' => C('WX_MCHID'),
        'nonce_str' => getRandom(32),
        'body' => $od_title,
        'out_trade_no' => $od_id,
        'total_fee' => $od_money * 100,
        'spbill_create_ip' => get_client_ip(),
        'notify_url' => $url,//通知地址
        'trade_type' => 'JSAPI',
        'openid' => $openid,
    );


    ksort($pay);
    $string =  ToUrlParams($pay).'&key='.C('WX_PAYAPIKEY');
    $string = md5($string);
    $string = strtoupper($string);
    $pay['sign'] = $string;
    $postObj = simplexml_load_string(os_post('https://api.mch.weixin.qq.com/pay/unifiedorder', arrayToXml($pay)), 'SimpleXMLElement', LIBXML_NOCDATA);

    $time = time();
    $timeStamp = "$time";
    $nonceStr = getRandom(32);
    $data['package'] = 'prepay_id='.$postObj -> prepay_id;
    $data['timestamp'] = $timeStamp;
    $data['nonceStr'] = $nonceStr;
    $val = 'appId='.C('WX_APPID').'&';
    $val .='nonceStr='.$nonceStr.'&';
    $val .='package='.$data['package'].'&';
    $val .='signType=MD5&';
    $val .='timeStamp='.$timeStamp;


    $stringA = $val.'&key='.C('WX_PAYAPIKEY');
    $data['sign'] = strtoupper(MD5($stringA));
    $data['val'] = $val;
    return $data;
}

微信回调的方法：

<?php
/**
 * Created by PhpStorm.
 * User: Kuoer
 * Date: 2016/4/9
 * Time: 14:41
 */

function payok($orderid, $alipayid, $openid, $total_fee, $type)
{    
            $postUrl =  'http://'.$_SERVER['HTTP_HOST'].'/index.php?s=/Home/Pay/weixinpay';
            $curlPost = 'orderid=' . $orderid . '&alipayid=' . $alipayid . '&openid=' . $openid;
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $postUrl);                 //抓取指定网页
            curl_setopt($ch, CURLOPT_HEADER, 0);                    //设置header
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);            //要求结果为字符串且输出到屏幕上
            curl_setopt($ch, CURLOPT_POST, 1);                      //post提交方式
            curl_setopt($ch, CURLOPT_POSTFIELDS, $curlPost);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);        // 终止从服务端进行验证
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
            curl_exec($ch);                                 //运行curl
            curl_close($ch);
}


    header('Access-Control-Allow-Origin: *');
    header('Access-Control-Allow-Headers: X-Requested-With');
    $xml = file_get_contents("php://input");
    $xml = simplexml_load_string($xml);
    //return (string)$xml->prepay_id;
    $success = (string)$xml->return_code;
    if ($success == 'SUCCESS') {
        $out_trade_no = (string)$xml->out_trade_no;
        $trade_no = (string)$xml->transaction_id;
        $openid = (string)$xml->openid;
        $pay = (string)$xml->total_fee;
        echo payok($out_trade_no, $trade_no, $openid, $pay, 'weixin');
    } else {
        $return_code = (string)$xml->return_code;
        $return_msg = (string)$xml->return_msg;
        echo '<xml>
                  <return_code><![CDATA[' . $return_code . ']]></return_code>
                  <return_msg><![CDATA[' . $return_msg . ']]></return_msg>
                </xml>';
    }

 

微信回调方法处理方法  需放在function.php里

这两个方法是处理微信给返回的一个支付成功的数据，这些数据都生成了一个txt文件

function quzhi( $s, $xml ) {
    $str = explode( '<' . $s . '>', $xml );
    $str = explode( '</' . $s . '>', $str[ 1 ] );
    return guolv( trim( $str[ 0 ] ) );
}

function guolv( $str ) {
    $s = array( '!', '-', '[', 'CDATA', ']', '<', '>' );
    return str_replace( $s, '', $str );
}

微信回调，我自己设置指定的那个单独创建的控制器里的方法：

<?php
namespace HomeController;
use ThinkController;
use UserApiUserApi;

class PayController extends HomeController {
     protected function _initialize(){
        
       /* 读取站点配置 */
        $config = api('Config/lists');
        C($config); //添加配置
     }
    public function weixinpay(){
        $orderid = I('orderid');
        $suijishu = rand(100000000,99999999999);
        $val = 'appid='.C('WX_APPID').'&';
        $val .='mch_id='.C('WX_MCHID').'&';
        $val .='nonce_str='.$suijishu.'&';
        $val .='out_trade_no='.$orderid;
        $stringA = $val.'&key='.C('WX_PAYAPIKEY');
        $url = 'https://api.mch.weixin.qq.com/pay/orderquery';
        $post_data = '<xml>
                           <appid>'.C('WX_APPID').'</appid>
                           <mch_id>'.C('WX_MCHID').'</mch_id>
                           <nonce_str>'.$suijishu.'</nonce_str>
                           <out_trade_no>'.$orderid.'</out_trade_no>
                           <sign>'.strtoupper(MD5($stringA)).'</sign>
                      </xml>';

        $ch = curl_init();
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_URL,$url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //要求结果为字符串且输出到屏幕上
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //不验证证书
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //不验证证书
        $res = curl_exec($ch);
        curl_close($ch);

　　　　//上面都是固定死的，下面才开始写你要修改的数据
        if(quzhi('trade_state',$res) == 'SUCCESS'){
            $orderid = I('orderid');
            $data['gwc_danhao'] = I('orderid');
            $data['money'] = quzhi('total_fee',$res);
            $data['liushui_hao'] = quzhi('transaction_id',$res);
            $on = M('yy_pay')->where($data)->find();//没有找到这条数据就去执行下面的添加
                
            
            
            if(!$on){
                $gwc_id['danhao'] = I('orderid');
                $gwc_uid = M('yy_goumai')->where($gwc_id)->getField('uid');
                $data['uid'] = $gwc_uid;
                $data['time'] = time();
                M('yy_pay')->add($data);
                
                $price = M('yy_goumai')->where($gwc_id)->sum('zongjia');
                if($price*100 != $data['money']){
                    $this->error('支付异常');
                }else{
                    $gouwuche = M('yy_goumai')->where($gwc_id)->select();
                    foreach($gouwuche as $k=>$v){
                        $gwc_zt['utime']=time();
                        $gwc_zt['state']=1;
                        M('yy_goumai')->where(array('id'=>$v['id']))->setField($gwc_zt);
                    }
                }
            }
        }
    }
}

好像支付就这些啦，如果有没说的地方可以联系我QQ:507285474

检测用户是否登录

/**
 * 检测用户是否登录
 * @return integer 0-未登录，大于0-当前登录用户ID
 * @author 麦当苗儿 <zuojiazi@vip.qq.com>
 */
function is_login(){
    $user = session('user_auth');
    if (empty($user)) {
        return 0;
    } else {
        return session('user_auth');
    }
}

 

 检测用户是否注册

 

/**
 * 检测用户是否微信登录
 * @return integer 0-未登录，大于0-当前登录用户ID
 * @author 5heAtMin9 <sheatming@foxmail.com>
 */

function is_wx_login(){
    $backurl = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'] . '?' . $_SERVER['QUERY_STRING'];
    $puid = I('sharecode',0);
    if(!is_login()){
        
        if(I('get.code')){
            
            $code = I('get.code');
            $appid = C('WX_APPID');
            $secret = C('WX_APPSECRET');
            $api = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . $appid . '&secret=' . $secret . '&code=' . $code . '&grant_type=authorization_code';
            $json = os_get($api);
            $array = json_decode($json, true);
            //
            $openid = $array['openid'];
            $token = $array['access_token'];
            //
            $where['openid'] = $openid;
            $user = M('ucenter_member')->where($where)->find();
            if(!$user){
                //没注册
                $api = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $token . '&openid=' . $openid . '&lang=zh_CN';
                $json = os_get($api);
                $array = json_decode($json, true);
                $tmp = rand(11111111111,99999999999);
                $access_info = array(
                    'type' => '2', //1.普通账号  2.微信账号  3.手机号  4.邮箱
                    'username' => $tmp, //微信注册 随机分配账号
                    'openid' => $openid,
                    'email' => $tmp.'@rand.com',
                    'status' => 1,
                    'reg_time' => time(),
                );
                $uid = M('ucenter_member') -> add($access_info);
                $user_info = array(
                    'uid' => $uid,
                    'openid' => $array['openid'],
                    'nickname' => $array['nickname'],
                    'sex' => $array['sex'],
                    'country' => $array['country'],
                    'city' => $array['city'],
                    'province' => $array['province'],
                    'headimgurl' => $array['headimgurl'],
                    'puid' => $puid,
                    'status' => 1
                );
                $re = M('member') -> add($user_info);
                session('user_auth',$uid);
                $url = str_replace('Home/', '', U('wechat.php?User/login', array('openid' => $openid,'backurl'=>urlencode($backurl),'y' => md5(time().'5heAtMin9'))));
                redirect($url);
//
            } else {
                session('user_auth',$user['id']);
                //注册了 跳转到登陆界面
                $url = str_replace('Home/', '', U('wechat.php?User/login', array('openid' => $openid,'backurl'=>urlencode($backurl),'y' => md5(time().'5heAtMin9'))));
                redirect($url);
                return $url;

            }
            //return $array;
        } else {
            $appid = C('WX_APPID');
            redirect('https://open.weixin.qq.com/connect/oauth2/authorize?appid='.$appid.'&redirect_uri='.urlencode($backurl).'&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect');
        }
    } else {
        
        return is_login();
    }
}

我们接着说退款：

点击退款传过来值，处理一下

最主要的是这个 function.php里的wx_tuikaun()方法  

 public function tuikuan(){
        $wher['id'] =I('id');
        $data['gwc_danhao'] = M('yy_goumai')->where($wher)->getField('danhao');
           $re = M('yy_pay')->where($data)->find();
        if($re){
            $gwc_arr['danbao'] = $re['gwc_danhao'];
            $gm = M('yy_goumai')->where($gwc_arr)->find();//退款需要用的商品总价
//            $gwc_tui_id = M('yy_goumai')->where(array('id'=>I('id')))->find();//退款需要用的商品单价(不是加上邮费的后的总金额)
//            dump($gwc_tui_id);die();
            $suijishu = time().rand(111111111,999999999).$gm['danhao'];//退款需要用的随机数
            //1.退款商品的单价(不是加上邮费的后的总金额)，2.支付成功后生成的流水单号，3.微信支付平台上要显示的流水号，(用时间戳 + 随机数 +　用户id);4.总价格。
            
            $tuikuan = wx_tuikuan($gm['danjia'],$re['liushui_hao'],$suijishu,$gm['zongjia']);
            if($tuikuan -> result_code == 'SUCCESS'){
                M('yy_pay')->where($data)->setField('tuikuan','1');
                $gwc_zt['state'] = '-2';
                $gwc_zt['utime'] = time();
                $yes = M('yy_goumai')->where($wher)->setField($gwc_zt);
                if($yes){
                    $this->success('退款成功');
                }else{
                    $this->error('退款失败');
                }
            }
            
        }else{
            $this->error('出错啦！订单号参数值不对！');
        }
    }

function.php  里的  wx_tuikaun()方法

/**
 * 微信退款
 * @param $od_money 退款金额
 * @param $od_id 订单编号
 * @return SimpleXMLElement
 */
function wx_tuikuan( $od_money, $od_id, $back_id, $zhifu ) {

    $pay = array(
        'appid' => C( 'WX_APPID' ),
        'mch_id' => C( 'WX_MCHID' ),
        'nonce_str' => getRandom( 32 ),
        'op_user_id' => C( 'WX_MCHID' ),
        'out_refund_no' => $back_id,
        'transaction_id' => $od_id,
        'refund_fee' => $od_money * 100,
        'total_fee' => $zhifu * 100,

    );

    ksort( $pay );
    $string = ToUrlParams( $pay ) . '&key=' . C( 'WX_PAYAPIKEY' );
    $string = md5( $string );
    $string = strtoupper( $string );
    $pay[ 'sign' ] = $string;
    $tmp = zhifu( 'https://api.mch.weixin.qq.com/secapi/pay/refund', arrayToXml( $pay ) );
//    dump($tmp);die();
    $postObj = simplexml_load_string( $tmp, 'SimpleXMLElement', LIBXML_NOCDATA );
    
    return $postObj;
    
}

/**
 * 微信退款
 * @param $od_money 退款金额
 * @param $od_id 订单编号
 * @return SimpleXMLElement
 */
function wx_refund($od_money, $od_id, $back_id)
{

    $pay = array(
        'appid' => C('WX_APPID'),
        'mch_id' => C('WX_MCHID'),
        'nonce_str' => getRandom(32),
        'op_user_id' => C('WX_MCHID'),
        'out_refund_no' => $back_id,
        'out_trade_no' => $od_id,
        'refund_fee' => $od_money * 100,
        'total_fee' => $od_money * 100,

    );

    ksort($pay);
    $string =  ToUrlParams($pay).'&key='.C('WX_PAYAPIKEY');
    $string = md5($string);
    $string = strtoupper($string);
    $pay['sign'] = $string;
    $tmp = zhifu('https://api.mch.weixin.qq.com/secapi/pay/refund', arrayToXml($pay));
    $postObj = simplexml_load_string($tmp, 'SimpleXMLElement', LIBXML_NOCDATA);
    return $postObj;
}

然后好像没有了！！！！

再见！！！