微信小程序支付PHP代码

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本文实例为大家分享微信小程序支付PHP具体代码,供大家参考,具体内容如下

服务器端获取 openid

Getopenid.PHP

PHP;"> PHP header('Content-type: application/json; charset=UTF-8'); $APPID="";//填写小程序appid $SECRET="";//填写小程序secret $JSCODE=""; if(isset($_GET['js_code'])){ $JSCODE=$_GET['js_code']; $url="https://api.weixin.qq.com/sns/jscode2session?appid=".$APPID ."&secret=".$SECRET."&js_code=".$JSCODE."&grant_type=authorization_code"; $curl = curl_init(); curl_setopt($curl,CURLOPT_URL,$url); curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,false); curl_setopt($curl,CURLOPT_RETURNTRANSFER,1); curl_setopt($curl,CURLOPT_HEADER,0); $data = curl_exec($curl); $array=json_decode($data,true);

curl_close($curl);
$openid=isset($array['openid'])?$array['openid']:$array['errcode'];
if($openid=="40029"){
$response["result"] = 0;
$response["msg"] = "invalid code";
$response["openid"] = $openid;
echo json_encode($response);
}else{
$response["result"] = 1;
$response["msg"] = "user exist";
$response["openid"] = $openid;
echo json_encode($response);
}
}

小程序存储openid

在app.js中

登录...',icon: 'loading',duration: 10000 }); //请求服务器 wx.request({ url: API_URL,//Getopenid.PHP data: { js_code: code,},method: 'GET',header: { 'content-type': 'application/json' },// 设置请求的 header success: function (res) { // success wx.hideToast(); console.log("JSON:" + res.data); if (res.data.result=="1"){//获取openid成功 wx.setStorage({//存储openid key: "openid",data: res.data.openid }) }else{ wx.showToast({ title: 'openid获取失败',icon: 'none',duration: 2000 }) } console.log('服务器返回' + res.data.result); console.log('服务器返回' + res.data.msg); console.log('服务器返回' + res.data.openid); },fail: function () { // fail // wx.hideToast(); },complete: function () { // complete } }) } }) } else { console.log('获取用户登录态失败!' + res.errMsg) } } }) } }

在登陆界面获取openid

调用应用实例的方法获取全局数据 app.getUserInfo(function(userInfo){//获取用户信息 //更新数据 that.setData({ userInfo:userInfo }) }) }

通过以上步骤已经获取到openid

支付方法小程序

获取存储在本地的openid key: 'openid',success: function (res) { console.log(res.data) that.setData({ openid:res.data,}) var carArray = that.data.carArray; var str=""; for (var i = 0; i < carArray.length; i++) { str=str+ carArray[i].num+"个" + carArray[i].name+" "; } wx.request({ url: 'Pay.PHP',//支付接口 data: { openid: res.data,//openid total_fee: that.data.totalPrice,//总金额 body: str,//商品描述 },method:'GET',success:function(res){ console.log(res.data['timeStamp']) if(res.data){ wx.requestPayment({ 'timeStamp': res.data['timeStamp'],'nonceStr': res.data['nonceStr'],'package': res.data['package'],'signType': 'MD5','paySign': res.data['paySign'],'success': function (res) { wx.showToast({ title: '支付成功',icon: 'succes',duration: 1000,mask: true }) //支付成功后在数据库减去购买商品的数量 var carArray = that.data.carArray; for (var i = 0; i < carArray.length; i++) { that.setData({ jiesuan_num: carArray[i].num,jiesuan_id: carArray[i].goods_id,}) DeGood(that); } },'fail': function (res) { wx.showToast({ title: '支付失败',mask: true }) } }) } } }) } }) },

Pay.PHP

PHP;"> pay(); echo json_encode($return);

WeixinPay.PHP

PHP;"> /*

  • 小程序微信支付
    */

class WeixinPay {

protected $appid;
protected $mch_id;
protected $key;
protected $openid;
protected $out_trade_no;
protected $body;
protected $total_fee;
function __construct($appid,$total_fee) {
$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;
}

public function pay() {
//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';
$parameters = array(
'appid' => $this->appid,//小程序ID
'mch_id' => $this->mch_id,//商户号
'nonce_str' => $this->createNoncestr(),//随机字符串
// 'body' => 'test',//商品描述
'body' => $this->body,// 'out_trade_no' => '2015450806125348',//商户订单号
'out_trade_no'=> $this->out_trade_no,// 'total_fee' => floatval(0.01 * 100),//总金额 单位 分
'total_fee' => $this->total_fee,// 'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],//终端IP
'spbill_create_ip' => '192.168.0.161',//终端IP
'notify_url' => 'http://www.weixin.qq.com/wxpay/pay.PHP',//通知地址 确保外网能正常访问
'openid' => $this->openid,//用户id
'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 $return;
}

private static function postXmlCurl($xml,$second = 30)
{
$ch = curl_init();
//设置超时
curl_setopt($ch,CURLOPT_TIMEOUT,$second);
curl_setopt($ch,$url);
curl_setopt($ch,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE); //严格校验
//设置header
curl_setopt($ch,FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch,TRUE);
//post提交方式
curl_setopt($ch,CURLOPT_POST,TRUE);
curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);

curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,20);
curl_setopt($ch,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) {
$xml = "";
foreach ($arr as $key => $val) {
if (is_array($val)) {
$xml .= "<" . $key . ">" . arrayToXml($val) . "</" . $key . ">";
} else {
$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
}
}
$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 = $this->unifiedorder();
// print_r($unifiedorder);
$parameters = array(
'appId' => $this->appid,//小程序ID
'timeStamp' => '' . time() . '',//时间戳
'nonceStr' => $this->createNoncestr(),//随机
'package' => 'prepay_id=' . $unifiedorder['prepay_id'],//数据包
'signType' => 'MD5'//签名方式
);
//签名
$parameters['paySign'] = $this->getSign($parameters);
return $parameters;
}

//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,strlen($buff) - 1);
}
return $reqPar;
}
}

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程之家。

原文链接:https://www.f2er.com/weapp/30788.html

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