1: In the WeChat environment, we need to obtain the code, and use the code to obtain the openid. When obtaining the openid, there are two parameters: snsapi_base and snsapi_userinfo. The snsapi_base is only for obtaining the openid, and the latter is for obtaining customer authorization. For example: WeChat ID: avatar and other parameters!
Note: At the end of the WeChat link, the state=value can be passed with parameters!
The code expires in five minutes and expires once it is used!
Let's start with the code:
$appid = 公众号appid;
$redirect_uri = 微信回调链接;
$snsapi =snsapi_base//snsapi_userinfo;
$url ="https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$appid."&redirect_uri=".$redirect_uri."&response_type=code&scope=".$snsapi;
Header("Location:$url");2: Get the code value returned by get: cooperate with the appid-secret (obtained in the official account settings) + get the code, use the post to get the openid, and pay the code:
$code =input('get.code');
$appid =appid值;
$secret =secret值;
$url ="https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=".$secret."&code=".$code."&grant_type=authorization_code";
$back =$this->geturl($url);//去post拿值3: At the current position, $back has an openid value, if you still need the continuation parameter under snsapi_userinfo! Customer avatar can be obtained through access_token (obtained value) + openid
Note: This will call the WeChat plug-in to pull the authorization login!
However, when I was developing this time, WeChat seems to have modified the mandatory pull-up authorization interface, which has been changed to prompt authorization at the bottom. This is not very friendly (for developers), and I have not found a way to force the authorization interface. I'll update here if I find it!
$url ='https://api.weixin.qq.com/sns/userinfo?access_token='.$back['access_token'].'&openid='.$back['openid'].'&lang=zh_CN';
$backWeixin = $this ->geturl($url); //这里用curl get
4: After getting the openid value, we can start to pay and prepare!
$openid ='上面获取的openid';
$appid ='公众号appid';
$key ='支付商户号里api安全里设置';//我目前用的是V2
$mch_id ='微信商户号';//注意不要选服务商号
$total_fee = 1; //微信已分计算
$body = '商品名称'; //商品描述
$out_trade_no = '订单号'; //订单号
$nonce_str = MD5($out_trade_no);//随机字符串
$spbill_create_ip = '获取ip';
$trade_type = 'JSAPI';//交易类型
$notify_url = '回调域名';
$scene_info ='{"h5_info":{"type":"Wap","wap_url":"域名","wap_name":"名称"}}'; //场景信息
$signA = "appid=$appid&body=$body&mch_id=$mch_id&nonce_str=$nonce_str¬ify_url=$notify_url&openid=$openid&out_trade_no=$out_trade_no&scene_info=$scene_info&spbill_create_ip=$spbill_create_ip&total_fee=$total_fee&trade_type=$trade_type";
$strSignTmp = $signA."&key=$key"; //拼接字符串
$sign = strtoupper(md5($strSignTmp)); // MD5 后转换成大写
$date = "<xml>
<appid>$appid</appid>
<body>$body</body>
<mch_id>$mch_id</mch_id>
<nonce_str>$nonce_str</nonce_str>
<notify_url>$notify_url</notify_url>
<openid>$openid</openid>
<out_trade_no>$out_trade_no</out_trade_no>
<scene_info>$scene_info</scene_info>
<spbill_create_ip>$spbill_create_ip</spbill_create_ip>
<total_fee>$total_fee</total_fee>
<trade_type>$trade_type</trade_type>
<sign>$sign</sign>
</xml>";
$dataxml = $this->http_post("https://api.mch.weixin.qq.com/pay/unifiedorder",$date);
$objectxml = (array)simplexml_load_string($dataxml, 'SimpleXMLElement', LIBXML_NOCDATA); 5: Up to the previous step, the main value we took is prepay_id; if you have used the post to get the normal value, then we are left with the last 2 steps
$prepayId ='上面获取到的值';
$pay = array(
'appId' => $appid,
'timeStamp' => '' . time() . '', //时间戳
'nonceStr' => $this->createNoncestr(), //随机串
'package' => 'prepay_id='.$prepayId, //数据包
'signType' => 'MD5'//签名方式
);
$pay['paySign'] = $this->getSign($pay);Here are 2 methods
private function createNoncestr($length = 32) {
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; } //作用：生成签名
private function getSign($Obj) { foreach ($Obj as $k => $v) {
$Parameters[$k] = $v;
}
//签名步骤一：按字典序排序参数
ksort($Parameters);
$String = $this->formatBizQueryParaMap($Parameters, false);
//签名步骤二：在string后加入KEY
$String = $String . "&key=1DKJ48bncxh3jd83ndcdAA23fvcf4g5w";
//签名步骤三：MD5加密
$String = md5($String);
//签名步骤四：所有字符转为大写
$result_ = strtoupper($String);
return $result_;
}
///作用：格式化参数，签名过程需要使用
private function formatBizQueryParaMap($paraMap, $urlencode) {
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v) {
if ($urlencode) {
$v = urlencode($v);
}
$buff .= $k . "=" . $v . "&";
}
$reqPar = '';
if (strlen($buff) > 0) {
$reqPar = substr($buff, 0, strlen($buff) - 1);
}
return $reqPar;
}
6: At this point, we can get all the values in $pay! If you did not report an error, please check step by step!
Next, we will return the value of $pay to the front-end page;
WeixinJSBridge.invoke(
'getBrandWCPayRequest', {
"appId" :'{$vo.appId}', //公众号ID
"timeStamp" :'{$vo.timeStamp}', //时间戳，当前系统的时间，具体格式，请看API
"nonceStr" : '{$vo.nonceStr}', //随机串，具体格式请看API
"package" : '{$vo.package}',//扩展包
"signType" : "MD5", //微信签名方式:sha1
"paySign" : '{$vo.paySign}', //微信签名
},
function(res){
if(res.err_msg == "get_brand_wcpay_request:ok" ){
成功跳转
}else{
失败跳转
}
});
}
if (typeof WeixinJSBridge == "undefined"){
if( document.addEventListener ){
document.addEventListener('WeixinJSBridgeReady', onBridgeReady, false);
}else if (document.attachEvent){
document.attachEvent('WeixinJSBridgeReady', onBridgeReady);
document.attachEvent('onWeixinJSBridgeReady', onBridgeReady);
}
}else{
onBridgeReady();
}
Note: On the H5 page inside the WeChat environment, WeChat provides 2 payment methods: mine is one, direct payment!
Another payment method is suitable for use in various methods: such as WeChat internal payment, WeChat internal forwarding, WeChat internal what!