扫码支付已经成为交易的一种流行方式，本文我们主要和大家分享实现微信扫码支付php代码，希望能帮助到大家。
一.需要用微信扫码付款,
支付文件pay.php
<?phpinclude("../../../config/conn.php");//数据库//sql先插入订单到数据库//读取订单号//$ddbh="测试订单号";///直接访问本页面测试ini_set('date.timezone','Asia/Shanghai');$mchid = '149651642'; //微信支付商户$appid = 'wxc35486954de04f5'; //公众号APPID $apiKey = '6ac2b9ef5a7c1190';//设置API密钥$wxPay = new WxpayService($mchid,$appid,$apiKey);$outTradeNo = $ddbh; //你商城的商品订单号$payAmount = 1; //金额，单位:元$orderName = 'wxpay'; //订单标题$notifyUrl = weburl."notify.php"; //付款成功后的回调地址(不要有问号),可直接放根目录$payTime = time(); $arr = $wxPay->createJsBizPackage($payAmount,$outTradeNo,$orderName,$notifyUrl,$payTime);//生成二维码$url2 = $arr['code_url'];//echo "<img src='{$url}' style='width:300px;'>";class WxpayService{ protected $mchid; protected $appid; protected $apiKey; public function __construct($mchid, $appid, $key) { $this->mchid = $mchid; $this->appid = $appid; $this->apiKey = $key; } /** * 发起订单 * @param float $totalFee 收款总费用 单位元 * @param string $outTradeNo 唯一的订单号 * @param string $orderName 订单名称 * @param string $notifyUrl 支付结果通知url 不要有问号 * @param string $timestamp 订单发起时间 * @return array */ public function createJsBizPackage($totalFee, $outTradeNo, $orderName, $notifyUrl, $timestamp) { $config = array( 'mch_id' => $this->mchid, 'appid' => $this->appid, 'key' => $this->apiKey, ); //$orderName = iconv('GBK','UTF-8',$orderName); $unified = array( 'appid' => $config['appid'], 'attach' => 'pay', //商家数据包，原样返回，如果填写中文，请注意转换为utf-8 'body' => $orderName, 'mch_id' => $config['mch_id'], 'nonce_str' => self::createNonceStr(), 'notify_url' => $notifyUrl, 'out_trade_no' => $outTradeNo, 'spbill_create_ip' => '127.0.0.1', 'total_fee' => intval($totalFee * 100), //单位 转为分 'trade_type' => 'NATIVE', ); $unified['sign'] = self::getSign($unified, $config['key']); $responseXml = self::curlPost('https://api.mch.weixin.qq.com/pay/unifiedorder', self::arrayToXml($unified)); $unifiedOrder = simplexml_load_string($responseXml, 'SimpleXMLElement', LIBXML_NOCDATA); if ($unifiedOrder === false) { die('parse xml error'); } if ($unifiedOrder->return_code != 'SUCCESS') { die($unifiedOrder->return_msg); } if ($unifiedOrder->result_code != 'SUCCESS') { die($unifiedOrder->err_code); } $codeUrl = (array)($unifiedOrder->code_url); if(!$codeUrl[0]) exit('get code_url error'); $arr = array( "appId" => $config['appid'], "timeStamp" => $timestamp, "nonceStr" => self::createNonceStr(), "package" => "prepay_id=" . $unifiedOrder->prepay_id, "signType" => 'MD5', "code_url" => $codeUrl[0], ); $arr['paySign'] = self::getSign($arr, $config['key']); return $arr; } public function notify() { $config = array( 'mch_id' => $this->mchid, 'appid' => $this->appid, 'key' => $this->apiKey, ); $postStr = $GLOBALS["HTTP_RAW_POST_DATA"]; $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA); if ($postObj === false) { die(&#<em>8本文来源gao.dai.ma.com搞@代*码(网$</em><pre>搞代gaodaima码
39;parse xml error'); } if ($postObj->return_code != 'SUCCESS') { die($postObj->return_msg); } if ($postObj->result_code != 'SUCCESS') { die($postObj->err_code); } $arr = (array)$postObj; unset($arr['sign']); if (self::getSign($arr, $config['key']) == $postObj->sign) { echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>'; return $postObj; } } /** * curl get * * @param string $url * @param array $options * @return mixed */ public static function curlGet($url = '', $options = array()) { $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_TIMEOUT, 30); if (!empty($options)) { curl_setopt_array($ch, $options); } //https请求 不验证证书和host curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); $data = curl_exec($ch); curl_close($ch); return $data; } public static function curlPost($url = '', $postData = '', $options = array()) { if (is_array($postData)) { $postData = http_build_query($postData); } $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $postData); curl_setopt($ch, CURLOPT_TIMEOUT, 30); //设置cURL允许执行的最长秒数 if (!empty($options)) { curl_setopt_array($ch, $options); } //https请求 不验证证书和host curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); $data = curl_exec($ch); curl_close($ch); return $data; } public static function createNonceStr($length = 16) { $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'; $str = ''; for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) – 1), 1); } return $str; } public static function arrayToXml($arr) { $xml = "<xml>"; foreach ($arr as $key => $val) { if (is_numeric($val)) { $xml .= "<" . $key . ">" . $val . "</" . $key . ">"; } else $xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">"; } $xml .= "</xml>"; return $xml; } /** * 获取签名 */ public static function getSign($params, $key) { ksort($params, SORT_STRING); $unSignParaString = self::formatQueryParaMap($params, false); $signStr = strtoupper(md5($unSignParaString . "&key=" . $key)); return $signStr; } protected static function formatQueryParaMap($paraMap, $urlEncode = false) { $buff = ""; ksort($paraMap); foreach ($paraMap as $k => $v) { if (null != $v && "null" != $v) { if ($urlEncode) { $v = urlencode($v); } $buff .= $k . "=" . $v . "&"; } } $reqPar = ''; if (strlen($buff) > 0) { $reqPar = substr($buff, 0, strlen($buff) – 1); } return $reqPar; }}?><html><head><meta http-equiv="content-type" content="text/html;charset=utf-8"/><meta name="viewport" content="width=device-width, initial-scale=1" /> <title><?=$g_webname?>微信支付</title><input type="hidden" id="wpay" value="<?php echo $url2; ?>"/></head><body><img style="float:left;clear:both;margin:0 0 0 7px;" src="<?=weburl?>tem/getqr.php?u=<?=urlencode($url2)?>&size=9"/></body></html>
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