微信小程序支付

商家在微信中成为服务号,认证入驻,提交申请

注:微信中业务域名需要https ,域名认证和小程序主体认证人并无关系,如:域名是A,小程序是B的,A提供业务域名以及后台,B的小程序业务域名可以选择为A,可以唤醒小程序支付,支付宝就不行。

小程序关联

获取一些信息【商户号】【小程序appid】【支付api 秘钥】

!!!!!!!!!!!!!!上代码!!!!!!!!!!!!

/**
 * 小程序支付
 */
public function appltsOp() {
    $pay_sn = $_GET['pay_sn'];
    $model_mb_payment = Model('mb_payment');
    $logic_payment = Logic('payment');
    $result = $logic_payment->getRealOrderInfo($pay_sn, $this->member_info['member_id']);
    if(!$result['state']) {
        output_error($result['msg']);
    }
    //小程序支付
    $this->_applts_pay($result['data']);
}
private function _applts_pay($order_pay_info){

    //处理获取openid
    $UserOpenId = Model()->table('member')->field('applet_openid')->where('member_id='.$order_pay_info['buyer_id'])->find()['applet_openid']; 
    $appid          = 'wx0a3-------32606a';     // 小程序id
    $mch_id         = "1531----761";        // 支付商户id
    $key            = '7e48a15------------f8';   // 商户的支付密钥
    $notify_url     = "http------------/notify_url.php";// 微信服务器异步通知
    $spbill_create_ip = $_SERVER['REMOTE_ADDR'];            // 客户端ip
    $openid         = $UserOpenId;                           // 用户openid
    $out_trade_no   = $order_pay_info['pay_sn'];             // 订单编号
    $body           = $order_pay_info['subject'];            // 订单描述
    $total_fee      = $order_pay_info['api_pay_amount'];     // 支付金额                              
    $weixinPay      = new WeixinPay($appid, $openid, $mch_id, $key,$out_trade_no,$body,$total_fee,$notify_url,$spbill_create_ip);
     $result = $weixinPay->pay();
     if($result['code'] == 0) {                              // 统一下单出错
         echo json_encode(array('status'=>'0','data'=>'统一下单出错'));die;  
     }
     echo json_encode(array('status'=>'1','data'=>$result));die;   
}

}

class WeixinPay {

protected $appid;
protected $mch_id;
protected $key;
protected $openid;
protected $out_trade_no;
protected $body;
protected $total_fee;
protected $notify_url;
protected $spbill_create_ip;

function __construct($appid, $openid, $mch_id, $key,$out_trade_no,$body,$total_fee,$notify_url,$spbill_create_ip) {

    $this->appid = $appid;
    $this->openid = $openid;
    $this->mch_id = $mch_id;
    $this->key = $key;
    $this->out_trade_no = $out_trade_no;
    $this->body = $body;
    $this->total_fee = $total_fee;
    $this->notify_url = $notify_url;
    $this->spbill_create_ip = $spbill_create_ip;
}

/************测试方法可删除*****************/
public function test() {
    $ha = "hello world";
    return $this->appid;
}
/************可删除*****************/

public function pay() {

// var_dump($this->notify_url);
// die;
//统一下单接口
$return = $this->weixinapp();
return $return;
}

//统一下单接口
private function unifiedorder() {
$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
// 这里的参数顺序一定要按下面的,不然可能就一直报商户号此功能未授权等错误
$parameters = array(
'appid' => $this->appid,                            // 小程序ID
//'body' => 'test',                                 // 商品描述
'body' => $this->body,
'mch_id' => $this->mch_id,                          // 商户号
'nonce_str' => $this->createNoncestr(),             // 随机字符串
'notify_url' => $this->notify_url,          //'https://shop.gdpress.cn/syw_jingzhun/index.php/Api/xiaochengxu/notify_url_api', // 通知地址 确保外网能正常访问
'openid' => $this->openid,                          // 用户id
// 'out_trade_no' => '2015450806125348',            // 商户订单号
'out_trade_no'=> $this->out_trade_no,
//'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],    // 终端IP
'spbill_create_ip' => $this->spbill_create_ip,      // 终端IP
'total_fee' => floatval(($this->total_fee) * 100),  // 单位 分
//'total_fee' => $this->total_fee,                  // 单位 分
'trade_type' => 'JSAPI'                             // 交易类型
);
//统一下单签名
$parameters['sign'] = $this->getSign($parameters);
$xmlData =  $this->arrayToXml($parameters);
$return  =  $this->xmlToArray($this->postXmlCurl($xmlData, $url, 60));
//$return  =  $this->postXmlCurl($xmlData, $url, 60);
// print_r($return);
// die;
return $return;
}
// curl请求方法封装
private static function postXmlCurl($xml, $url, $second = 30) 
{
$ch = curl_init();
//设置超时
curl_setopt($ch, CURLOPT_TIMEOUT, $second);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //严格校验
//设置header
curl_setopt($ch, CURLOPT_HEADER, FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
//post提交方式
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
curl_setopt($ch, CURLOPT_TIMEOUT, 40);
set_time_limit(0);
//运行curl
$data = curl_exec($ch);
//返回结果
if ($data) {
curl_close($ch);
return $data;
} else {
$error = curl_errno($ch);
curl_close($ch);
throw new WxPayException("curl出错,错误码:$error");
}
}
//数组转换成xml
private function arrayToXml($arr) {
$xml = "<xml>";
foreach ($arr as $key => $val) {
if (is_array($val)) {
$xml .= "<" . $key . ">" . arrayToXml($val) . "</" . $key . ">";
} else {
$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
}
}
$xml .= "</xml>";
return $xml;
}
//xml转换成数组
private function xmlToArray($xml) {
//禁止引用外部xml实体 
libxml_disable_entity_loader(true);
$xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
$val = json_decode(json_encode($xmlstring), true);
return $val;
}
//微信小程序接口
private function weixinapp() {
//统一下单接口
$unifiedorder = $this->unifiedorder();
// 统一下单出错,参数出错等原因
if($unifiedorder['return_code'] == 'FAIL') {
$retrunInfo['code'] = 0;
$retrunInfo['msg'] = $unifiedorder['return_msg'];
return $retrunInfo;
}
// print_r($unifiedorder);
// die;
$parameters = array(
'appId' => $this->appid,                                // 小程序ID
'timeStamp' => '' . time() . '',                        // 时间戳
'nonceStr' => $this->createNoncestr(),                  // 随机串
'package' => 'prepay_id=' . $unifiedorder['prepay_id'], // 数据包
'signType' => 'MD5'                                     // 签名方式
);
// 小程序发起支付签名
$parameters['paySign'] = $this->getSign($parameters);
// 成功返回
$retrunInfo['code'] = 1;
$retrunInfo['msg'] = $parameters;
return $retrunInfo;
}
//作用:产生随机字符串,不长于32位
private function createNoncestr($length = 32) {
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
//作用:生成签名
private function getSign($Obj) {
foreach ($Obj as $k => $v) {
$Parameters[$k] = $v;
}
//签名步骤一:按字典序排序参数
ksort($Parameters);
$String = $this->formatBizQueryParaMap($Parameters, false);
//签名步骤二:在string后加入KEY
$String = $String . "&key=" . $this->key;
//签名步骤三:MD5加密
$String = md5($String);
//签名步骤四:所有字符转为大写
$result_ = strtoupper($String); 
return $result_;
}
// 作用:格式化参数,签名过程需要使用
private function formatBizQueryParaMap($paraMap, $urlencode) {
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v) {
if ($urlencode) {
$v = urlencode($v);
}
$buff .= $k . "=" . $v . "&";
}
$reqPar;
if (strlen($buff) > 0) {
$reqPar = substr($buff, 0, strlen($buff) - 1);
}
return $reqPar;
}

}

结束-------------------------------------------------------------------------------------------------------------

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