php微信支付之公众号支付功能
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2023-12-09 21:24:57
网上的很多php微信扫码支付接入教程都颇为复杂,且需要配置和引入较多的文件,本人通过整理后给出一个单文件版的,希望可以给各位想接入微信扫码支付的带来些许帮助和借鉴意义。...
网上的很多php微信扫码支付接入教程都颇为复杂,且需要配置和引入较多的文件,本人通过整理后给出一个单文件版的,希望可以给各位想接入微信扫码支付的带来些许帮助和借鉴意义。
将该文件放到你的授权目录下,并在微信里访问这个文件,即可看到演示效果。效果如下:
需要注意的事项:
1.该文件需放到支付授权目录下,可以在微信支付商户平台->产品中心->开发配置中设置。
2.如提示签名错误可以通过微信支付签名验证工具进行验证:
代码如下:
<?php header('content-type:text/html; charset=utf-8'); $mchid = 'xxxxx'; //微信支付商户号 partnerid 通过微信支付商户资料审核后邮件发送 $appid = 'xxxxx'; //微信支付申请对应的公众号的appid $appkey = 'xxxxx'; //微信支付申请对应的公众号的app key $apikey = 'xxxxx'; //https://pay.weixin.qq.com 帐户设置-安全设置-api安全-api密钥-设置api密钥 //①、获取用户openid $wxpay = new wxpayservice($mchid,$appid,$appkey,$apikey); $openid = $wxpay->getopenid(); //获取openid if(!$openid) exit('获取openid失败'); //②、统一下单 $outtradeno = uniqid(); //你自己的商品订单号 $payamount = 0.01; //付款金额,单位:元 $ordername = '支付测试'; //订单标题 $notifyurl = 'https://www.xxx.com/wx/'; //付款成功后的回调地址(不要有问号) $paytime = time(); //付款时间 $jsapiparameters = $wxpay->createjsbizpackage($openid,$payamount,$outtradeno,$ordername,$notifyurl,$paytime); $jsapiparameters = json_encode($jsapiparameters); ?> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>微信支付样例-支付</title> <script type="text/javascript"> //调用微信js api 支付 function jsapicall() { weixinjsbridge.invoke( 'getbrandwcpayrequest', <?php echo $jsapiparameters; ?>, function(res){ weixinjsbridge.log(res.err_msg); alert(res.err_code+res.err_desc+res.err_msg); } ); } function callpay() { if (typeof weixinjsbridge == "undefined"){ if( document.addeventlistener ){ document.addeventlistener('weixinjsbridgeready', jsapicall, false); }else if (document.attachevent){ document.attachevent('weixinjsbridgeready', jsapicall); document.attachevent('onweixinjsbridgeready', jsapicall); } }else{ jsapicall(); } } </script> </head> <body> <br/> <font color="#9acd32"><b>该笔订单支付金额为<span style="color:#f00;font-size:50px"><?php echo $payamount?>元</span>钱</b></font><br/><br/> <div align="center"> <button style="width:210px; height:50px; border-radius: 15px;background-color:#fe6714; border:0px #fe6714 solid; cursor: pointer; color:white; font-size:16px;" type="button" onclick="callpay()" >立即支付</button> </div> </body> </html> <?php class wxpayservice { protected $mchid; protected $appid; protected $appkey; protected $apikey; public $data = null; public function __construct($mchid, $appid, $appkey,$key) { $this->mchid = $mchid; //https://pay.weixin.qq.com 产品中心-开发配置-商户号 $this->appid = $appid; //微信支付申请对应的公众号的appid $this->appkey = $appkey; //微信支付申请对应的公众号的app key $this->apikey = $key; //https://pay.weixin.qq.com 帐户设置-安全设置-api安全-api密钥-设置api密钥 } /** * 通过跳转获取用户的openid,跳转流程如下: * 1、设置自己需要调回的url及其其他参数,跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize * 2、微信服务处理完成之后会跳转回用户redirect_uri地址,此时会带上一些参数,如:code * @return 用户的openid */ public function getopenid() { //通过code获得openid if (!isset($_get['code'])){ //触发微信返回code码 $scheme = $_server['https']=='on' ? 'https://' : 'http://'; $baseurl = urlencode($scheme.$_server['http_host'].$_server['php_self'].$_server['query_string']); $url = $this->__createoauthurlforcode($baseurl); header("location: $url"); exit(); } else { //获取code码,以获取openid $code = $_get['code']; $openid = $this->getopenidfrommp($code); return $openid; } } /** * 通过code从工作平台获取openid机器access_token * @param string $code 微信跳转回来带上的code * @return openid */ public function getopenidfrommp($code) { $url = $this->__createoauthurlforopenid($code); $res = self::curlget($url); //取出openid $data = json_decode($res,true); $this->data = $data; $openid = $data['openid']; return $openid; } /** * 构造获取open和access_toke的url地址 * @param string $code,微信跳转带回的code * @return 请求的url */ private function __createoauthurlforopenid($code) { $urlobj["appid"] = $this->appid; $urlobj["secret"] = $this->appkey; $urlobj["code"] = $code; $urlobj["grant_type"] = "authorization_code"; $bizstring = $this->tourlparams($urlobj); return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizstring; } /** * 构造获取code的url连接 * @param string $redirecturl 微信服务器回跳的url,需要url编码 * @return 返回构造好的url */ private function __createoauthurlforcode($redirecturl) { $urlobj["appid"] = $this->appid; $urlobj["redirect_uri"] = "$redirecturl"; $urlobj["response_type"] = "code"; $urlobj["scope"] = "snsapi_base"; $urlobj["state"] = "state"."#wechat_redirect"; $bizstring = $this->tourlparams($urlobj); return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizstring; } /** * 拼接签名字符串 * @param array $urlobj * @return 返回已经拼接好的字符串 */ private function tourlparams($urlobj) { $buff = ""; foreach ($urlobj as $k => $v) { if($k != "sign") $buff .= $k . "=" . $v . "&"; } $buff = trim($buff, "&"); return $buff; } /** * 统一下单 * @param string $openid 调用【网页授权获取用户信息】接口获取到用户在该公众号下的openid * @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 $timestamp 支付时间 * @return string */ public function createjsbizpackage($openid, $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, 'openid' => $openid, //rade_type=jsapi,此参数必传 'out_trade_no' => $outtradeno, 'spbill_create_ip' => '127.0.0.1', 'total_fee' => intval($totalfee * 100), //单位 转为分 'trade_type' => 'jsapi', ); $unified['sign'] = self::getsign($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); } $arr = array( "appid" => $config['appid'], "timestamp" => "$timestamp", //这里是字符串的时间戳,不是int,所以需加引号 "noncestr" => self::createnoncestr(), "package" => "prepay_id=" . $unifiedorder->prepay_id, "signtype" => 'md5', ); $arr['paysign'] = self::getsign($arr, $config['key']); return $arr; } public static function curlget($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 . ">"; } $xml .= "</xml>"; file_put_contents('1.txt',$xml); return $xml; } public static function getsign($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; } } ?>
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