WeChat payment packaged in 2016 is so easy to use

I have been working on WeChat and encountered many pitfalls. I wrote it down today so that everyone can avoid detours. It is my first time to write text, which is a bit crude. If there is anything you don’t understand, you can contact me at QQ1034100429, or send a private message.
getaccesstoken Get access_token
//Initiate payment
public function sendpay($openid, $title, $out_trade_no, $total_fee, $notify_url)

sendtpl sends template messages<?php<br /> /**<br />  * Created by PhpStorm.<br />  * User: Administrator<br />  * Date: 2016/4/11<br />  * Time: 22:43<br />  */<br /> namespace Org;<br /> class Weixin<br /> {<br /> Private $appid; //Appid of WeChat official account<br /> Private $appsecret; //appsecret of WeChat public account<br /> Private $mchid; //The merchant account of the WeChat public account<br /> Private $wechatkey; //Payment key for WeChat official account<br /> ​​private$token;<br /> Public function __construct()<br /> {<br />           $this->appid = C('WEIXIN_APPID');<br>          $this->appsecret = C("WEIXIN_APP_SECRET");<br>          $this->mchid = C("WEIXIN_MCHID");<br>          $this->wechatkey = C("WEIXIN_KEY");<br>          $this->token = C('WEIXIN_APP_TOKEN');<br> <br> }<br> Public function chushi()<br> {<br> echo $this->getaccesstoken();<br> }<br> Public function checkSignature()<br> {<br>         $signature = $_GET['signature'];<br>         $timestamp = $_GET['timestamp'];<br>         $nonce = $_GET['nonce'];<br> $token = $this->token;<br>         $arrtemp = array($token, $timestamp, $nonce);<br>         sort($arrtemp, SORT_STRING);<br>          $arrtemp = implode($arrtemp);<br>          $arrtemp = sha1($arrtemp);<br> If ($arrtemp == $signature) {<br>                 return true;<br>                                        else {<br> Return false; <br>         }<br> }<br> Public function valid()<br> {<br>         $echoStr = $_GET['echostr'];<br> If ($this->checkSignature()) {<br> echo $echoStr;<br> exit;<br>         }<br> }<br> ////According to the returned information, make corresponding processing<br> // public function responseMsg()<br> // {<br> //        $postStr = file_get_contents('php://input');<br> //        if (!empty($postStr)){<br> //                   /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,<br> // the best way is to check the validity of xml by yourself */<br> //     libxml_disable_entity_loader(true);<br> //          $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);<br>//            $fromUsername = $postObj->FromUserName;<br> //            $toUsername = $postObj->ToUserName;<br> //            $keyword = trim($postObj->Content);<br> //            $msgType = $postObj->MsgType;<br> //            $Event=$postObj->Event;<br> //            $time = time();<br> //            $textTpl = "<xml><br> //                            <ToUserName><![CDATA[%s]]></ToUserName><br> //                            <FromUserName><![CDATA[%s]]></FromUserName><br> //                            <CreateTime>%s</CreateTime><br> //                            <MsgType><![CDATA[%s]]></MsgType><br> //                            <Content><![CDATA[%s]]></Content><br> //                            <FuncFlag>0</FuncFlag><br> //                            </xml>";<br> //            if(!empty( $keyword ))<br> //            {<br> //                $msgType = "text";<br> //                $contentStr = "Welcome to wechat world!";<br> //                $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);<br> //                echo $resultStr;<br> //            }else{<br> //                echo "Input something...";<br> //            }<br> //<br> //        }else {<br> //            echo "";<br> //            exit;<br> //        }<br> //    }<br>     public function getaccesstoken()<br>     {<br>         $access_token = S('access_token');<br>         if(!empty($access_token)){<br> <br>             return $access_token;<br>         }else{<br>             $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . $this->appid . "&secret=" . $this->appsecret;;<br>             $ret = $this->curlget($url);<br>            $ret = json_decode($ret,true);<br>             S('access_token',$ret['access_token'],7100);<br>     <br>             return $ret['access_token'];<br>         }<br>     }<br>     //根据openid拉取用户信息<br>     public  function userinfo($openid){<br>         $access_token = $this->getaccesstoken();<br>         $url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=".$access_token."&openid=".$openid."&lang=zh_CN";<br>         $userinfo = json_decode($this->curlget($url),true);<br>         return $userinfo;<br>     }<br>     function p($arr){<br>         echo "<meta charset='utf8'><pre class="brush:php;toolbar:false">";<br>         print_r($arr);<br>     }<br>     function curlget($url)<br>     {<br>         $ch = curl_init();<br>         curl_setopt($ch, CURLOPT_URL, $url);<br>         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);<br>         curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);<br>         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);<br>         curl_setopt($ch, CURLOPT_HEADER, 0);<br>         $output = curl_exec($ch);<br>         curl_close($ch);<br>         return $output;<br>     }<br>     public function jingmo($url,$code,$state){<br>         if($code){<br>             $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$this->appid."&secret=".$this->appsecret."&code=".$code."&grant_type=authorization_code";<br>             $arrtemp = json_decode($this->curlget($url),true);<br>             $ret = $this->getuserinfo($arrtemp['openid'],$arrtemp['access_token']);<br>             return  $ret;<br>         }else{<br>             $url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=".$this->appid."&redirect_uri=".$url."&response_type=code&scope=snsapi_userinfo&state=".$state."#wechat_redirect";<br>             header("Location: $url");<br>         }<br>     }<br>     public function getuserinfo($openid,$user_access_token){<br>         $userurl = "https://api.weixin.qq.com/sns/userinfo?access_token=".$user_access_token."&openid=".$openid."&lang=zh_CN";<br>         $userinfo = json_decode($this->curlget($userurl),true);<br>         return $userinfo;<br>     }<br>     public function getjsapi_ticket(){<br>         $js_ticket = S("js_ticket");<br>         if(!empty($js_ticket)){<br>             return $js_ticket;<br>         }else{<br>            $access_token = $this->getaccesstoken();<br>             $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=".$access_token."&type=jsapi";<br>             $res = json_decode($this->curlget($url),true);<br>             S("js_ticket",$res['ticket'],7100);<br>             return $res['ticket'];<br>         }<br>     }<br>     public function getjssign(){<br>         echo "<meta charset='utf8'>";<br>         $js_ticket = $this->getjsapi_ticket();<br>         $time = time();<br>         $arr = array(<br>             'noncestr'=>md5($time),<br>             'jsapi_ticket'=>$js_ticket,<br>             'timestamp'=>$time,<br>             'url'=>'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'],<br> <br>         );<br>         $this->p($arr);<br>         ksort($arr);<br>         $string="";<br>         $i=1;<br>         foreach($arr as $key=>$val){<br>             if($i==1){<br>                 $string.=$key."=".$val;<br>             }else{<br>                 $string.="&".$key."=".$val;<br>             }<br>             $i++;<br>             echo $i;<br>         }<br>         // echo $string;<br>         $signature =strtolower($string);<br>         $signature =  sha1($string);<br>         $jsconfig = array(<br>             'debug'=>true,<br>             'appId'=>$this->appid,<br>             'timestamp'=>$time,<br>             'nonceStr'=>md5($time),<br>             'signature'=>$signature,<br>             ' jsApiList'=>"['onMenuShareTimeline','onMenuShareAppMessage','onMenuShareQQ']",<br>         );<br>         $json = json_encode($jsconfig);<br>         return $json;<br>     }<br>     //生成大写签名<br>     function createsign($arr,$biaozhi){<br>         ksort($arr);<br>         $string="";<br>         $i=1;<br>         foreach($arr as $key=>$val){<br>             if($i==1){<br>                $string.=$key."=".$val;<br>             }else{<br>                 $string.="&".$key."=".$val;<br>             }<br>             $i++;<br>         }<br>         $signtemp = "$string&key=" . $this->wechatkey;<br>         $sign = strtoupper(MD5($signtemp));<br>         $arr[$biaozhi] = $sign;<br>         //$json = json_encode($arr);<br>         return $arr;<br>     }<br>     //支付<br> <br>     //发起支付<br>     public function sendpay($openid, $title, $out_trade_no, $total_fee, $notify_url)<br>     {<br>         $time = time();<br>         $arr = array(<br>             'appid' => $this->appid,<br>             'mch_id' => $this->mchid,<br>             'nonce_str' => md5($time),<br>             'body' => "kjhk",<br>             'out_trade_no' => $out_trade_no,<br>             'total_fee' => $total_fee,<br>             'spbill_create_ip' => "127.0.0.1",<br>             'notify_url' => $notify_url,<br>             'trade_type' => "JSAPI",<br>             'openid' => $openid,<br>         );<br>         $biaozhi ='sign';<br>         $arr = $this->createsign($arr,$biaozhi);<br>         $xml = "<xml>";<br>         foreach ($arr as $key=>$val) {<br>             $xml.="<".$key.">".$val."</".$key.">";<br>         }<br>         $xml.="</xml>";<br>         $url = "https://api.mch.weixin.qq.com/pay/unifiedorder";<br>         $resxml =  $this->postCurlTransfer($url,$xml);<br>         $res = simplexml_load_string($resxml);<br>         $cutime = time();<br>         $jsapiarr=array(<br>             'appId'=>$this->appid,<br>             'timeStamp'=>"$cutime",<br>             'nonceStr'=>md5($cutime),<br>             'package'=>"prepay_id=".$res->prepay_id,<br>             'signType'=>"MD5",<br>         );<br>        $biaozhi = 'paySign';<br>         $jsapi = $this->createsign($jsapiarr,$biaozhi);<br>        // $jsapijson = json_encode($jsapi);<br>         return $jsapi;<br>     }<br>     public function getpaysign(){<br>         $time = time();<br>         $arr = array(<br>             'appid'=>$this->appid,<br>             'mch_id'=>$this->mchid,<br>             'nonce_str'=>md5($time),<br>             'body'=>"sdf",<br>             'out_trade_no'=>"2016".$time,<br>             'total_fee'=>1,<br>             'spbill_create_ip'=>"127.0.0.1",<br>             'notify_url'=>"http://www.baidu.com",<br>             'trade_type'=>"JSAPI",<br>         );<br>         ksort($arr);<br>         $string="";<br>         $i=1;<br>         foreach($arr as $key=>$val){<br>             if($i==1){<br>                 $string.=$key."=".$val;<br>             }else{<br>                 $string.="&".$key."=".$val;<br>             }<br>             $i++;<br>         }<br>         $string.="&key=".$this->wechatkey;<br>         $sign = strtoupper(md5($string));<br>         $arr['sign'] = $sign;<br>         return $arr;<br>     }<br>     function Post($curlPost,$url){<br>         $curl = curl_init();<br>         curl_setopt($curl, CURLOPT_URL, $url);<br>         curl_setopt($curl, CURLOPT_HEADER, false);<br>         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);<br>         curl_setopt($curl, CURLOPT_NOBODY, true);<br>         curl_setopt($curl, CURLOPT_POST, true);<br>         curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);<br>         $return_str = curl_exec($curl);<br>         curl_close($curl);<br>         return $return_str;<br>     }<br>     private function postCurlTransfer($url, $data)<br>     {<br>         $curl = curl_init();<br>         curl_setopt($curl, CURLOPT_URL, $url);<br>         curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);<br>         curl_setopt($curl, CURLOPT_POST, 1);<br>         curl_setopt($curl, CURLOPT_POSTFIELDS, $data);<br>          $str = curl_exec($curl);<br>           curl_close($curl);<br> <br> Return $ Str; <br> }<br> //Send template message<br> Public function sendtpl($openid, $url, $template_id, $content, $topcolor="#FF0000")<br> {<br>          $arr = array(<br>              'touser' => $openid,<br> ‘template_id’ => $template_id,<br>              'url' => $url,<br>             'topcolor' => $topcolor,<br>              'data' => $content,<br> );<br>          $arrjson = json_encode($arr);<br> $accesstoken = $this->getAccessToken();<br>          $sendurl = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=".$accesstoken;<br>           return $this->postCurlTransfer($sendurl, $arrjson);<br> }<br> }The above is a simple package of WeChat payment

If you initiate payment, please first correspond to the information of the WeChat official account.
Including WeChat payment directory
I am here
http://domain name//index.php/Home/Index/
It seems to be this

The process of obtaining access_token<?php<br /> /**<br />  * Created by PhpStorm.<br />  * User: sks<br />  * Date: 16/7/8<br />  * Time: 下午3:54<br />  */<br /> namespace HomeController;<br /> use CommonControllerHomebaseController;<br /> Class WeixinController extends HomebaseController{<br /> Public function zhanshi(){<br />         $weixin = new OrgWeixin;<br />          $code = $_GET['code'];<br />         $state = $_GET['state'];<br />         $url="";<br /> $userinfo = $weixin->jingmo($url, $code, $state);<br> Session('userinfo',$userinfo);<br>            if($code) {<br>               header("Location: $state");<br>           }else{<br>         }<br> }<br> }Public function
function.phpfunction getuserinfo(){ //Get user information<br> Import("weixin");<br> $weixin = new OrgWeixin;<br> $info = session('userinfo');<br> If($info){<br> Return $ info; <br>           die;<br> }else {<br> $state = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];<br>           $code =                                                               $url = 'http://' . $_SERVER['HTTP_HOST'] . U('Home/Weixin/zhanshi');<br> ​​​​$url = urlencode($url);<br>          $weixin->jingmo($url, $code, $state);<br> }<br> }<br>Test payment /**
* Created by PhpStorm.
*User: sks
* Date: 16/7/8
* Time: 3:29 pm
*/
namespace HomeController;
use CommonControllerHomebaseController;
use ThinkPage;
Class IndexController extends HomebaseController{

//Test payment
Public function zhifu()
{
                $userinfo =  getuserinfo(); //Get WeChat user information and call the public function
         $openid = $userinfo['openid'];
        $time = time();
​​​​$title = "I want to pay";
         $out_trade_no = date('Y',time()).$time.rand(1000,2000);
         $total_fee = 1;
         $notify_url = "http://domain name/index.php/Home/Index/paynotify";//Callback URL
        $weixin = new OrgWeixin;
$result = $weixin->sendpay($openid, $title, $out_trade_no, $total_fee, $notify_url);
         $this->assign('result',$result);
          $this->display();
}
//Here is the payment result notification
Public function paynotify(){
        $weixin = new OrgWeixin;
         $xml = file_get_contents("php://input");
         $p = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
         $arr = $this->object_array($p);
         $out_trade_no = $arr['out_trade_no'];
        $transaction_id= $arr['transaction_id'];
         $openid = $arr['openid'];
        $sign = $arr['sign'];
​​​​//Processing payment results
​​​​unset($arr['sign']);
        $biaozhi = "sign";
         $ret = $weixin->createsign($arr, $biaozhi);
If($ret['sign'] === $sign) {
              $aa = "Success";
                                       else {
              $aa = "Failure";
        }
​​​​​$file = './logweixin.txt';//The file name of the file to be written (can be any file name), if the file does not exist, it will be created
          $content = $out_trade_no."***".$transaction_id."First written content n";
If($f = file_put_contents($file, $content,FILE_APPEND)){//This function supports version (PHP 5)
echo "Writing successful.
";
           }
//The process of processing payment results here
          echo "success";
}

Public function getaccesstoken(){
        $weixin = new OrgWeixin;
echo $weixin->getaccesstoken();

}
}