/**
* 作用：生成签名
*/
public static function getSign($Obj, $key)
{
foreach ($Obj as $k => $v) {
$Parameters[$k] = $v;
}
//签名步骤一：按字典序排序参数
ksort($Parameters);
$String = WxPayCore::formatBizQueryParaMap($Parameters, false);
//echo '【string1】'.$String.'</br>';
//签名步骤二：在string后加入KEY
$String = $String . "&key=" . $key;
//echo "【string2】".$String."</br>";
//签名步骤三：MD5加密
$String = md5($String);
//echo "【string3】 ".$String."</br>";
//签名步骤四：所有字符转为大写
$result_ = strtoupper($String);
//echo "【result】 ".$result_."</br>";
return $result_;
}
/**
* 作用：生成可以获得code的url
* 然后在redirect_url中获取code 并设置到session['wx_conde']
*/
function createOauthUrlForCode()
{
$urlObj["appid"] = $this->appid;
$urlObj["redirect_uri"] = $this->redirect_url;
$urlObj["response_type"] = "code";
$urlObj["scope"] = "snsapi_base";
$urlObj["state"] = "STATE" . "#wechat_redirect";
$bizString = WxPayCore::formatBizQueryParaMap($urlObj, false);
return "https://open.weixin.qq.com/connect/oauth2/authorize?" . $bizString;
}