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這篇文章給大家分享的是有關(guān)PHP如何實(shí)現(xiàn)微信小程序在線支付功能的內(nèi)容。小編覺(jué)得挺實(shí)用的,因此分享給大家做個(gè)參考,一起跟隨小編過(guò)來(lái)看看吧。
小程序訪問(wèn)地址:payfee.php 如果使用TP框架處理后臺(tái)的話,寫(xiě)成方法即可
include 'WeixinPay.php'; $appid=''; //小程序appid $openid= $_POST['id']; $mch_id=''; //微信支付商戶支付號(hào) $key=''; //Api密鑰 $out_trade_no = $mch_id. time(); $total_fee = $_POST['fee']; if (empty($total_fee)) { //押金 $body = "充值押金"; $total_fee = floatval(99*100); } else { $body = "充值余額"; $total_fee = floatval($total_fee*100); } $weixinpay = new WeixinPay($appid,$openid,$mch_id,$key,$out_trade_no,$body,$total_fee); $return=$weixinpay->pay(); echo json_encode($return);
WeixinPay.php微信小程序支付類(lèi) 所有微信小程序需要的參數(shù)都已經(jīng)寫(xiě)入
/* * 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, $openid, $mch_id, $key,$out_trade_no,$body,$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() { //統(tǒng)一下單接口 $return = $this->weixinapp(); return $return; } //統(tǒng)一下單接口 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, //商戶號(hào) 'nonce_str' => $this->createNoncestr(), //隨機(jī)字符串 // 'body' => 'test', //商品描述 'body' => $this->body, // 'out_trade_no' => '2018013106125348', //商戶訂單號(hào) 'out_trade_no'=> $this->out_trade_no, // 'total_fee' => floatval(0.01 * 100), //總金額 單位 分 'total_fee' => $this->total_fee, 'spbill_create_ip' => $_SERVER['REMOTE_ADDR'], //終端IP // 'spbill_create_ip' => '192.168.0.161', //終端IP 'notify_url' => 'https://www.weixin.qq.com/wxpay/notify.php', //通知地址 確保外網(wǎng)能正常訪問(wèn) 'openid' => $this->openid, //用戶id 'trade_type' => 'JSAPI'//交易類(lèi)型 ); //統(tǒng)一下單簽名 $parameters['sign'] = $this->getSign($parameters); $xmlData = $this->arrayToXml($parameters); $return = $this->xmlToArray($this->postXmlCurl($xmlData, $url, 60)); return $return; } private static function postXmlCurl($xml, $url, $second = 30) { $ch = curl_init(); //設(shè)置超時(shí) curl_setopt($ch, CURLOPT_TIMEOUT, $second); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //嚴(yán)格校驗(yàn) //設(shè)置header curl_setopt($ch, CURLOPT_HEADER, FALSE); //要求結(jié)果為字符串且輸出到屏幕上 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); //運(yùn)行curl $data = curl_exec($ch); //返回結(jié)果 if ($data) { curl_close($ch); return $data; } else { $error = curl_errno($ch); curl_close($ch); throw new WxPayException("curl出錯(cuò),錯(cuò)誤碼:$error"); } } //數(shù)組轉(zhuǎn)換成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 $xml; } //xml轉(zhuǎn)換成數(shù)組 private function xmlToArray($xml) { //禁止引用外部xml實(shí)體 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() { //統(tǒng)一下單接口 $unifiedorder = $this->unifiedorder(); // print_r($unifiedorder); $parameters = array( 'appId' => $this->appid, //小程序ID 'timeStamp' => '' . time() . '', //時(shí)間戳 'nonceStr' => $this->createNoncestr(), //隨機(jī)串 'package' => 'prepay_id=' . $unifiedorder['prepay_id'], //數(shù)據(jù)包 'signType' => 'MD5'//簽名方式 ); //簽名 $parameters['paySign'] = $this->getSign($parameters); return $parameters; } //作用:產(chǎn)生隨機(jī)字符串,不長(zhǎng)于32位 private function createNoncestr($length = 32) { $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; $str = ""; for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; } //作用:生成簽名 private function getSign($Obj) { foreach ($Obj as $k => $v) { $Parameters[$k] = $v; } //簽名步驟一:按字典序排序參數(shù) ksort($Parameters); $String = $this->formatBizQueryParaMap($Parameters, false); //簽名步驟二:在string后加入KEY $String = $String . "&key=" . $this->key; //簽名步驟三:MD5加密 $String = md5($String); //簽名步驟四:所有字符轉(zhuǎn)為大寫(xiě) $result_ = strtoupper($String); return $result_; } ///作用:格式化參數(shù),簽名過(guò)程需要使用 private function formatBizQueryParaMap($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; } }
小程序頁(yè)面請(qǐng)求處理:
wx.request({ url: 'https://yourhost.com/wxpay/payfee.php',//改成你自己的鏈接 data:{ id: app.globalData.openid,//獲取用戶openid fee:100 //商品價(jià)格 }, header: { 'Content-Type': 'application/x-www-form-urlencoded' }, method: 'POST', success: function (res) { console.log(res.data); console.log('調(diào)起支付'); wx.requestPayment({ 'timeStamp': res.data.timeStamp, 'nonceStr': res.data.nonceStr, 'package': res.data.package, 'signType': 'MD5', 'paySign': res.data.paySign, 'success': function (res) { console.log('success'); wx.showToast({ title: '支付成功', icon: 'success', duration: 3000 }); }, 'fail': function (res) { console.log(res); }, 'complete': function (res) { console.log('complete'); } }); }, fail: function (res) { console.log(res.data) } });
回調(diào)URL:notify.php
$postXml = $GLOBALS["HTTP_RAW_POST_DATA"]; //接收微信參數(shù) // 接受不到參數(shù)可以使用file_get_contents("php://input"); PHP高版本中$GLOBALS好像已經(jīng)被廢棄了 if (empty($postXml)) { return false; } //將xml格式轉(zhuǎn)換成數(shù)組 function xmlToArray($xml) { //禁止引用外部xml實(shí)體 libxml_disable_entity_loader(true); $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA); $val = json_decode(json_encode($xmlstring), true); return $val; } $attr = xmlToArray($postXml); $total_fee = $attr['total_fee']; $open_id = $attr['openid']; $out_trade_no = $attr['out_trade_no']; $time = $attr['time_end'];
So:在微信的異步通知后,也需要給微信服務(wù)器,返回一個(gè)信息,只不過(guò)微信的所有數(shù)據(jù)格式都是xml的,所以我們?cè)诜祷匾粋€(gè)數(shù)據(jù)給微信即可。
echo exit('<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>');
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