微信app支付

function wechat($appid,$mchid,$appkey,$cert_path,$key_path,$order_id,$openid,$amount,$desc){
    $arr = [
            'mch_appid'=>$appid,//注意区分公众号和app商户号不同
            'mchid'=>$mchid,
            'nonce_str'=>str_random(32),//随机数
            'partner_trade_no'=>$order_id,//自己定义一个不重复订单号
            'openid'=>$openid,//微信openid 通过微信授权登录获取
            'check_name'=>'NO_CHECK',
            'amount'=>$amount*100,//注意这里传给微信的单位是分
            'desc'=>$desc,
            'spbill_create_ip'=>\Request::getClientIp(),
            'sign'=>'',
        ];
        ksort($arr);
        $sign="";
        foreach ($arr as $key => $value) {
            if($value && $key!="sign" && $key!="key"){
                $sign.=$key."=".$value."&";
            }
        }
        $sign.="key=".$appkey;//商户后台自定义的
        $arr['sign'] = strtoupper(md5($sign));
        $xml = "";
        foreach ($arr as $key=>$val)
        {
                if (is_numeric($val))
             {
                $xml.="<".$key.">".$val.""; 

             }
             else
                $xml.="<".$key.">";  
        }
        $xml.="";
       
        $ch = curl_init();
        //超时时间
        curl_setopt($ch,CURLOPT_TIMEOUT,60);
        curl_setopt($ch,CURLOPT_URL,'https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers');
        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
        //默认格式为PEM
        curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLCERT,$cert_path);//注意区分公众号和app商户号的证书不同，需要到pay.weixin.qq.com后台下载
        curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
        curl_setopt($ch,CURLOPT_SSLKEY,$key_path);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: text/xml'));
        curl_setopt($ch,CURLOPT_POST, 1);
        curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
        $data = curl_exec($ch);
        $data = json_decode(json_encode(simplexml_load_string($data, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
        curl_close($ch);
        return $data;//$data['return_code'] == 'SUCCESS' && $data['result_code'] == 'SUCCESS' 支付成功
    }
    }

附：
https://youqingkui.me/note/e57abb2a-3997-47f1-b9fe-ac94740130ce
python版微信支付
http://bblove.me/2015/10/25/weixin-app-pay-v3-0/
微信APP支付服务端php sdk开发教程
https://github.com/fanhefan/wechat_app_pay
微信红包API接口
http://jeffchen.sinaapp.com/
http://tao.logdown.com/posts/195357-micro-payments-app-integration

以上就介绍了 微信app支付，包括了github方面的内容，希望对PHP教程有兴趣的朋友有所帮助。