一切尽在代码中，代码附有注释，欢迎大家参考。
<?php
class wxpayservice
{
protected $mchid;
protected $appid;
protected $key;
public function __construct($mchid, $appid, $key)
{
$this->mchid = $mchid; // 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
$this->appid = $appid; //公众号appid 通过微信支付商户资料审核后邮件发送
$this->key = $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
}
/**
* @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 $notifyurl 支付结果通知url 不要有问号
* https://mp.weixin.qq.com/ 微信支付-开发配置-测试目录
* 测试目录 http://mp.izhanlue.com/paytest/ 最后需要斜线，(需要精确到二级或三级目录)
* @return string
*/
public function createjsbizpackage($openid, $totalfee, $outtradeno, $ordername, $notifyurl, $timestamp)
{
$config = array(
'mch_id' => $this->mchid,
'appid' => $this->appid,
'key' => $this->key,
);
$unified = array(
'appid' => $config['appid'],
'attach' => '支付', //商家数据包，原样返回
'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));
/*
<xml>
<return_code><![cdata[success]]></return_code>
<return_msg><![cdata[ok]]></return_msg>
<appid><![cdata[wx00e5904efec77699]]></appid>
<mch_id><![cdata[1220647301]]></mch_id>
<nonce_str><![cdata[1lhbrosdmqfxowqr]]></nonce_str>
<sign><![cdata[aca7bc8a9164d1fbed06c7dfc13ec839]]></sign>
<result_code><![cdata[success]]></result_code>
<prepay_id><![cdata[wx2015032016590503f1bcd9c30421762652]]></prepay_id>
<trade_type><![cdata[jsapi]]></trade_type>
</xml>
*/
$unifiedorder = simplexml_load_string($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($unifiedorder->err_code);
/*
noauth 商户无此接口权限
notenough 余额不足
orderpaid 商户订单已支付
orderclosed 订单已关闭
systemerror 系统错误
appid_not_exist appid不存在
mchid_not_exist mchid不存在
appid_mchid_not_match appid和mch_id不匹配
lack_params 缺少参数
out_trade_no_used 商户订单号重复
signerror 签名错误
xml_format_error xml格式错误
require_post_method 请使用post方法
post_data_empty post数据为空
not_utf8 编码格式错误
*/
}
//$unifiedorder->trade_type 交易类型 调用接口提交的交易类型，取值如下：jsapi，native，app
//$unifiedorder->prepay_id 预支付交易会话标识 微信生成的预支付回话标识，用于后续接口调用中使用，该值有效期为2小时
//$unifiedorder->code_url 二维码链接 trade_type为native是有返回，可将该参数值生成二维码展示出来进行扫码支付
$arr = array(
"appid" => $config['appid'],
"timestamp" => $timestamp,
"noncestr" => self::createnoncestr(),
"package" => "prepay_id=" . $unifiedorder->prepay_id,
"signtype" => 'md5',
);
$arr['paysign'] = self::getsign($arr, $config['key']);
return $arr;
}
public function notify()
{
$config = array(
'mch_id' => $this->mchid,
'appid' => $this->appid,
'key' => $this->key,
);
$poststr = $globals["http_raw_post_data"];
//error_log($poststr, 3, './str.txt');
/*
$poststr = '<xml>
<appid><![cdata[wx00e5904efec77699]]></appid>
<attach><![cdata[支付测试]]></attach>
<bank_type><![cdata[cmb_credit]]></bank_type>
<cash_fee><![cdata[1]]></cash_fee>
<fee_type><![cdata[cny]]></fee_type>
<is_subscribe><![cdata[y]]></is_subscribe>
<mch_id><![cdata[1220647301]]></mch_id>
<nonce_str><![cdata[a0tz41phihm8zfmo]]></nonce_str>
<openid><![cdata[ou3oct5o46pumn7ie87wcoyzy9r0]]></openid>
<out_trade_no><![cdata[550bf2990c51f]]></out_trade_no>
<result_code><![cdata[success]]></result_code>
<return_code><![cdata[success]]></return_code>
<sign><![cdata[f6f519b4dd8db978040f8c866c1e6250]]></sign>
<time_end><![cdata[20150320181606]]></time_end>
<total_fee>1</total_fee>
<trade_type><![cdata[jsapi]]></trade_type>
<transaction_id><![cdata[1008840847201503200034663980]]></transaction_id>
</xml>';
*/
$postobj = simplexml_load_string($poststr, 'simplexmlelement', libxml_nocdata);
if ($postobj === false) {
die('parse xml error');
}
if ($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) {
// $mch_id = $postobj->mch_id; //微信支付分配的商户号
// $appid = $postobj->appid; //微信分配的公众账号id
// $openid = $postobj->openid; //用户在商户appid下的唯一标识
// $transaction_id = $postobj->transaction_id;//微信支付订单号
// $out_trade_no = $postobj->out_trade_no;//商户订单号
// $total_fee = $postobj->total_fee; //订单总金额，单位为分
// $is_subscribe = $postobj->is_subscribe; //用户是否关注公众账号，y-关注，n-未关注，仅在公众账号类型支付有效
// $attach = $postobj->attach;//商家数据包，原样返回
// $time_end = $postobj->time_end;//支付完成时间
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 $xml;
}
/**
* 例如：
* appid： wxd930ea5d5a258f4f
* mch_id： 10000100
* device_info： 1000
* body： test
* nonce_str： ibuaivckdprxkhja
* 第一步：对参数按照 key=value 的格式，并按照参数名 ascii 字典序排序如下：
* stringa="appid=wxd930ea5d5a258f4f&body=test&device_info=1000&mch_i
* d=10000100&nonce_str=ibuaivckdprxkhja";
* 第二步：拼接支付密钥：
* stringsigntemp="stringa&key=192006250b4c09247ec02edce69f6a2d"
* sign=md5(stringsigntemp).touppercase()="9a0a8659f005d6984697e2ca0a9cf3b7"
*/
public static function getsign($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;
}
}
以上代码大家都能看得懂吧，有哪里不明白的地方欢迎给我留言，我会在第一时间和大家取得联系的。谢谢大家对硕编程网站的支持。
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