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。谢谢大家对菜鸟教程(cainiaojc.com)网站的支持。