php微信支付之公众号支付功能
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2023-11-17 09:55:04
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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