timeStamp,nonceStr',package， signType，HMAC-SHA256，paySign 数据都获取到了为什么还是签名错误啊？？？

求告知

以前是可以的  昨天下载替换最新SDK就出问题了   PHP的

wx.request({

url: base_url + 'pay/request/wxAppPay.php?oid=' + oid,

data: { oid: oid },

method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT

// header: {}, // 设置请求的 header

success: function (res) {

console.log(res,'回调');

// success

wx.requestPayment({

'timeStamp': res.data.timeStamp,

'nonceStr': res.data.nonceStr,

'package': res.data.package,

'signType': 'HMAC-SHA256',

'paySign': res.data.paySign,

'success': function (res) {

wx.showToast({

title: '支付成功',

icon: 'success',

duration: 2000

});

setTimeout(function () {

that.setData({ current: 1, list: [] })

page = 1;

render(that);

}, 2000);

},

'fail': function (res) {

console.log(res);

},

'complete': function (res) {

// console.log(res);

}

});

},

fail: function (res) {

// fail

//   console.log(res);

},

complete: function (res) {

// complete

}

})