WxPay.JsApiPay.php
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<?php
require_once dirname(dirname(__FILE__)) . "/lib/WxPay.Api.php";
/**
*
* JSAPI支付实现类
* 该类实现了从微信公众平台获取code、通过code获取openid和access_token、
* 生成jsapi支付js接口所需的参数、生成获取共享收货地址所需的参数
*
* 该类是微信支付提供的样例程序，商户可根据自己的需求修改，或者使用lib中的api自行开发
*
* @author widy
*
*/
class JsApiPay
{
/**
*
* 网页授权接口微信服务器返回的数据，返回样例如下
* {
* "access_token":"ACCESS_TOKEN",
* "expires_in":7200,
* "refresh_token":"REFRESH_TOKEN",
* "openid":"OPENID",
* "scope":"SCOPE",
* "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL"
* }
* 其中access_token可用于获取共享收货地址
* openid是微信支付jsapi支付接口必须的参数
* @var array
*/
public $data = null;
public $appid = "";
public $appsecret = "";
public $key = "";
function setConf($appid, $key, $appsecret)
{
$this->appid = $appid;
$this->key = $key;
$this->appsecret = $appsecret;
mlog($this->appid.$this->key.$this->appsecret.'2','recharge');
}
/**
*
* 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
$baseUrl = urlencode('http://' . $_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;
}
}
/**
*
* 获取jsapi支付的参数
* @param array $UnifiedOrderResult 统一支付接口返回的数据
* @throws WxPayException
*
* @return json数据，可直接填入js函数作为参数
*/
public function GetJsApiParameters($UnifiedOrderResult)
{
if (!array_key_exists("appid", $UnifiedOrderResult)
|| !array_key_exists("prepay_id", $UnifiedOrderResult)
|| $UnifiedOrderResult['prepay_id'] == ""
) {
return -999;
}
$jsapi = new WxPayJsApiPay();
$jsapi->SetAppid($UnifiedOrderResult["appid"]);
$timeStamp = time();
$jsapi->SetTimeStamp("$timeStamp");
$jsapi->SetNonceStr(WxPayApi::getNonceStr());
$jsapi->SetPackage("prepay_id=" . $UnifiedOrderResult['prepay_id']);
$jsapi->SetSignType("MD5");
$jsapi->SetPaySign($jsapi->MakeSign($this->key));
$parameters = json_encode($jsapi->GetValues());
return $parameters;
}
/**
*
* 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);
//初始化curl
$ch = curl_init();
//设置超时
curl_setopt($ch, CURLOPT_TIMEOUT, 120);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
if (WxPayConfig::CURL_PROXY_HOST != "0.0.0.0"
&& WxPayConfig::CURL_PROXY_PORT != 0
) {
curl_setopt($ch, CURLOPT_PROXY, WxPayConfig::CURL_PROXY_HOST);
curl_setopt($ch, CURLOPT_PROXYPORT, WxPayConfig::CURL_PROXY_PORT);
}
//运行curl，结果以jason形式返回
$res = curl_exec($ch);
curl_close($ch);
//取出openid
$data = json_decode($res, true);
$this->data = $data;
$openid = $data['openid'];
return $openid;
}
/**
*
* 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;
}
/**
*
* 获取地址js参数
*
* @return 获取共享收货地址js函数需要的参数，json格式可以直接做参数使用
*/
public function GetEditAddressParameters()
{
$getData = $this->data;
$data = array();
$data["appid"] = $this->appid;
$data["url"] = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$time = time();
$data["timestamp"] = "$time";
$data["noncestr"] = "1234568";
$data["accesstoken"] = $getData["access_token"];
ksort($data);
$params = $this->ToUrlParams($data);
$addrSign = sha1($params);
$afterData = array(
"addrSign" => $addrSign,
"signType" => "sha1",
"scope" => "jsapi_address",
"appId" => $this->appid,
"timeStamp" => $data["timestamp"],
"nonceStr" => $data["noncestr"]
);
$parameters = json_encode($afterData);
return $parameters;
}
/**
*
* 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;
}
/**
*
* 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->appsecret;
$urlObj["code"] = $code;
$urlObj["grant_type"] = "authorization_code";
$bizString = $this->ToUrlParams($urlObj);
return "https://api.weixin.qq.com/sns/oauth2/access_token?" . $bizString;
}
}