本文实例为大家分享了php实现小程序支付的具体代码&＃xff0c;供大家参考&＃xff0c;具体内容如下
环境&＃xff1a; tp3.2 &＃43; 小程序 微信支付功能开通
step1:下载php 支付sdk() 放到library\vendor下&＃xff0c;取名wxpay
修改wxpay.config.php 里的appid appsecret key mchid
step2:小程序 js 代码&＃xff1a;
var url &＃61; getapp().globaldata.httpserver &＃43; &＃39;api/buy/pay&＃39;;
var userid &＃61; getapp().globaldata.userid;
var totalmoney &＃61; this.data.totalmoney;
var cart &＃61; this.data.goods;
var param &＃61; {
cart: json.stringify(cart),
cartamount: totalmoney,
userid: userid,
payment: this.data.payment,
addressid: defaultaddress.id
};
var that &＃61; this;
util.http(url, param, function (ret) {
if (ret.data.code &＃61;&＃61; 1) {
if (that.data.payment &＃61;&＃61; &＃39;balance&＃39;) { // 余额支付
that.afterpaysuccess(ret.data.data);
} else { // 微信支付
wx.requestpayment({
timestamp: ret.data.data.timestamp,
noncestr: ret.data.data.noncestr,
package: ret.data.data.package,
signtype: ret.data.data.signtype,
paysign: ret.data.data.paysign,
&＃39;success&＃39;: function (res) {
that.afterpaysuccess(ret.data.data.orderid);
},
&＃39;fail&＃39;: function (res) {
console.log(res);
}
})
}
} else {
util.showtip(ret.data.msg, &＃39;提交订单失败&＃39;);
}
});
/**
* 网络请求
*/
function http(url, params, callback) {
wx.request({
url: url,
data: params,
success: function (res) {
callback(res);
},
fail: function (err) {
console.log(err);
}
});
}
step3:接口代码&＃xff1a;
public function pay()
{
$cart &＃61; i(&＃39;cart&＃39;, &＃39;&＃39;, &＃39;trim&＃39;);
$cartamount &＃61; i(&＃39;cartamount&＃39;);
$addressid &＃61; i(&＃39;addressid&＃39;, 0, &＃39;intval&＃39;);
$payment &＃61; i(&＃39;payment&＃39;, &＃39;&＃39;, &＃39;trim&＃39;);
$userid &＃61; $this->userid;
$cart &＃61; json_decode($cart, true);
if (empty($cart)) {
$result[&＃39;msg&＃39;] &＃61; &＃39;购物车获取失败&＃39;;
$result[&＃39;code&＃39;] &＃61; 0;
$this->ajaxreturn($result);
}
$totalmoney &＃61; 0;
foreach ($cart as $goods) {
$money &＃61; $goods[&＃39;price&＃39;]; // price
$selectcount &＃61; $goods[&＃39;selectcount&＃39;]; // price
$itemamount &＃61; number_format($money * $selectcount, 2, &＃39;.&＃39;, &＃39;&＃39;);
$totalmoney &＃43;&＃61; $itemamount;
}
// 检查总金额是否一致
if ($totalmoney !&＃61; $cartamount) {
$result[&＃39;msg&＃39;] &＃61; &＃39;总金额不匹配:&＃39; . $totalmoney;
$result[&＃39;code&＃39;] &＃61; 0;
$this->ajaxreturn($result);
}
// 获取用户地址
$address &＃61; m(&＃39;memberaddress&＃39;)->where(&＃39;userid&＃61;&＃39; . $userid . " and id&＃61;" . $addressid)->find();
if (empty($address)) {
$result[&＃39;msg&＃39;] &＃61; &＃39;用户地址不存在&＃39;;
$result[&＃39;code&＃39;] &＃61; 0;
$this->ajaxreturn($result);
}
// 用户信息
$user &＃61; m(&＃39;member&＃39;)->where("id&＃61;" . $userid)->find();
if ($payment &＃61;&＃61; &＃39;balance&＃39;) {
if ($user[&＃39;amount&＃39;] <$cartamount) {
$result[&＃39;msg&＃39;] &＃61; &＃39;余额不足&＃39;;
$result[&＃39;code&＃39;] &＃61; 0;
$this->ajaxreturn($result);
}
}
// 生成订单
$order[&＃39;ordersn&＃39;] &＃61; $this->genordersn($user[&＃39;id&＃39;]);
$order[&＃39;price&＃39;] &＃61; $cartamount;
$order[&＃39;addressid&＃39;] &＃61; $address[&＃39;id&＃39;];
$order[&＃39;addressinfo&＃39;] &＃61; serialize($address); //json_encode($address);
$order[&＃39;longitude&＃39;] &＃61; $address[&＃39;longitude&＃39;];
$order[&＃39;latitude&＃39;] &＃61; $address[&＃39;latitude&＃39;];
$order[&＃39;addtime&＃39;] &＃61; time();
$order[&＃39;status&＃39;] &＃61; 0;
$order[&＃39;userid&＃39;] &＃61; $user[&＃39;id&＃39;];
$order[&＃39;paytype&＃39;] &＃61; $payment;
$order[&＃39;paysn&＃39;] &＃61; &＃39;&＃39;;
$order[&＃39;paytime&＃39;] &＃61; time();
$orderid &＃61; m("order")->add($order);
if ($orderid &＃61;&＃61; 0) {
$result[&＃39;msg&＃39;] &＃61; &＃39;创建订单失败&＃39;;
$result[&＃39;code&＃39;] &＃61; 0;
$this->ajaxreturn($result);
}
foreach ($cart as $goods) {
$ordergoods[&＃39;orderid&＃39;] &＃61; $orderid;
$ordergoods[&＃39;goodsid&＃39;] &＃61; $goods[&＃39;id&＃39;];
$ordergoods[&＃39;title&＃39;] &＃61; $goods[&＃39;title&＃39;];
$ordergoods[&＃39;price&＃39;] &＃61; $goods[&＃39;price&＃39;];
$ordergoods[&＃39;attr&＃39;] &＃61; $goods[&＃39;attr&＃39;];
$ordergoods[&＃39;pic&＃39;] &＃61; $goods[&＃39;pic&＃39;];
$ordergoods[&＃39;num&＃39;] &＃61; $goods[&＃39;selectcount&＃39;];
m("ordergoods")->add($ordergoods);
}
if ($payment &＃61;&＃61; &＃39;balance&＃39;) {
// 余额支付
$this->balancepay($cartamount, $user[&＃39;wxopenid&＃39;], $orderid);
} else if ($payment &＃61;&＃61; &＃39;weixin&＃39;) {
// 微信支付
$this->weixinpay($cartamount, $user[&＃39;wxopenid&＃39;], $orderid, $order[&＃39;ordersn&＃39;]);
}
}
/**
* 微信支付
* &＃64;author 大脸猫脸大
* &＃64;param $cart
* &＃64;param $cartamount
* &＃64;param $address
* &＃64;param $user
*/
private function weixinpay($cartamount, $openid, $orderid, $ordersn)
{
import("vendor.wxpay.lib.wxpay#api", "", ".php");
//订单号
$money &＃61; $cartamount * 100;
$openid &＃61; $openid;
$input &＃61; new \wxpayunifiedorder();
$input->setbody("迪克-商品");
$input->setout_trade_no("$ordersn");
$input->settotal_fee("$money");
$input->setnotify_url("https://" . $_server[&＃39;http_host&＃39;] . "/api/buy/paynotify");
$input->settrade_type("jsapi");
$input->setopenid($openid);
$unifiedorder &＃61; \wxpayapi::unifiedorder($input);
if ($unifiedorder[&＃39;result_code&＃39;] &＃61;&＃61; &＃39;success&＃39; && $unifiedorder[&＃39;return_code&＃39;] &＃61;&＃61; &＃39;success&＃39;) {
$time &＃61; time();
$data[&＃39;timestamp&＃39;] &＃61; "$time"; //时间戳
$data[&＃39;noncestr&＃39;] &＃61; $unifiedorder[&＃39;nonce_str&＃39;]; //随机字符串
$data[&＃39;signtype&＃39;] &＃61; &＃39;md5&＃39;; //签名算法&＃xff0c;暂支持 md5
$data[&＃39;package&＃39;] &＃61; &＃39;prepay_id&＃61;&＃39; . $unifiedorder[&＃39;prepay_id&＃39;]; //统一下单接口返回的 prepay_id 参数值&＃xff0c;提交格式如&＃xff1a;prepay_id&＃61;*
$data[&＃39;paysign&＃39;] &＃61; $this->genpaysign($unifiedorder, $time);// 之前以为是$unifiedorder[&＃39;sign&＃39;]; 后来发现是调用的这种方法. 签名方案参见微信公众号支付帮助文档;
$data[&＃39;out_trade_no&＃39;] &＃61; $ordersn;
$data[&＃39;orderid&＃39;] &＃61; $orderid;
$return[&＃39;code&＃39;] &＃61; 1;
$return[&＃39;data&＃39;] &＃61; $data;
} else {
log::write(var_export($unifiedorder, true), log::err, &＃39;&＃39;, c(&＃39;log_path&＃39;)."wx_pay_".date(&＃39;y_m_d&＃39;).&＃39;.log&＃39;);
$return[&＃39;code&＃39;] &＃61; 0;
$return[&＃39;msg&＃39;] &＃61; &＃39;微信支付失败&＃39;;// $unifiedorder[&＃39;return_msg&＃39;];
}
$this->ajaxreturn($return);
}
/* 生成支付签名*/
private function genpaysign($unifiedorder, $time)
{
$appid &＃61; \wxpayconfig::appid;
$noncestr &＃61; $unifiedorder[&＃39;nonce_str&＃39;];
$package &＃61; &＃39;prepay_id&＃61;&＃39; . $unifiedorder[&＃39;prepay_id&＃39;];
$signtype &＃61; "md5";
$timestamp &＃61; $time;
$key &＃61; \wxpayconfig::key;
$sign &＃61; md5(sprintf("appid&＃61;%s&noncestr&＃61;%s&package&＃61;%s&signtype&＃61;%s×tamp&＃61;%s&key&＃61;%s", $appid, $noncestr, $package, $signtype, $timestamp, $key));
}
/**
* 支付回调
* &＃64;author:大脸猫脸大
*/
public function paynotify()
{
import("vendor.wxpay.lib.wxpay#data", "", ".php");
$xml &＃61; $globals[&＃39;http_raw_post_data&＃39;];
$val &＃61; \wxpayresults::init($xml);
if ($val[&＃39;result_code&＃39;] &＃61;&＃61; &＃39;success&＃39; && $val[&＃39;return_code&＃39;] &＃61;&＃61; &＃39;success&＃39;) {
$ordersn &＃61; $val[&＃39;out_trade_no&＃39;];
$transactionid &＃61; $val[&＃39;transaction_id&＃39;];
$data &＃61; array(&＃39;paytype&＃39; &＃61;> &＃39;weixin&＃39;, &＃39;status&＃39; &＃61;> &＃39;1&＃39;, &＃39;paytime&＃39; &＃61;> time(), &＃39;paysn&＃39; &＃61;> $transactionid);
m("order")->where("ordersn&＃61;&＃39;$ordersn&＃39;")->setfield($data);
exit(&＃39;&＃39;);
}else {
log::write(var_export($val, true), log::err, &＃39;&＃39;, c(&＃39;log_path&＃39;)."wx_pay_notify_".date(&＃39;y_m_d&＃39;).&＃39;.log&＃39;);
exit(&＃39;&＃39;);
}
}
paynotify 回调方法里一定要注意返回
如果不处理&＃xff0c;你会发现paynotify 会被执行很多次参见&＃xff1a;官方文档
总结一下&＃xff1a;
注意二点&＃xff0c;1.签名的问题 2. 回调方法的返回处理。
欢迎大家指正。
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