微信公众平台生成场景二维码

痛定思痛。 2022-08-09 18:50 429阅读 0赞

使用微信公众平台接口生成场景二维码，可用来区分公众平台中用户来自哪里。（用户扫描此二维码后，公众号可以接收到事件推送EventKey就是设置的场景值）

官方文档：http://mp.weixin.qq.com/wiki/18/28fc21e7ed87bec960651f0ce873ef8a.html

测试代码如下

生成二维码代码：

<?php

header("Content-type:text/html;charset=utf-8");  
$fname=$\_REQUEST\['fname'\];//生成二维码名称（字母或数字）  
$cjval=$\_REQUEST\['cjval'\];//二维码携带参数（数字或字母）  
  
$filename = './changjing/'.$fname.'.jpg';  
echo "start ...<br/>";//die;  
$url="https://api.weixin.qq.com/cgi-bin/qrcode/create?access\_token=";  
$data='\{"action\_name": "QR\_LIMIT\_STR\_SCENE", "action\_info": \{"scene": \{"scene\_str": "'.$cjval.'"\}\}\}';//永久二维码格式，临时二维码只有参数不同可参考官方格式  
bug($data);//die;  
$result=httpPostData($url, $data);  
bug($result);  
$ticket=$result->ticket;  
$ticket\_url=$result->url;  
$ticket=urlencode($ticket);  
$qurl="https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=".$ticket;  
$return\_content = http\_get\_data($qurl);//获取图片内容  
$fp= fopen($filename,"a"); //将文件绑定到流   
$bool=fwrite($fp,$return\_content); //写入文件  
//var\_dump($bool);  
if($bool)\{  
     //二维码生成成功...  
    echo "success!!!";  
    $filename=str\_ireplace('./','',$filename);  
    echo "<br/>下载地址：http://www.xxxx.com/".$filename;  
\}else\{  
    echo "error";  
\}  
  
  
function bug($msg)\{  
    echo "<pre style='color:red'>";  
    var\_dump($msg);  
    echo "</pre>";  
      
\}  
//生成图片  
function http\_get\_data($url) \{  
     
    $ch = curl\_init ();  
    curl\_setopt ( $ch, CURLOPT\_CUSTOMREQUEST, 'GET' );  
    curl\_setopt ( $ch, CURLOPT\_SSL\_VERIFYPEER, false );  
    curl\_setopt ( $ch, CURLOPT\_URL, $url );  
    ob\_start ();//在服务器打开一个缓冲区来保存所有的输出  
    curl\_exec ( $ch );  
    $return\_content = ob\_get\_contents ();//前面来获得缓冲区的内容。  
    ob\_end\_clean ();//会清除缓冲区的内容，并将缓冲区关闭，但不会输出内容。  
    return $return\_content;  
\}  
//curlget请求  
function httpGet($url) \{  
    $curl = curl\_init ();  
    curl\_setopt ( $curl, CURLOPT\_RETURNTRANSFER, true );  
    curl\_setopt ( $curl, CURLOPT\_TIMEOUT, 500 );  
    curl\_setopt ( $curl, CURLOPT\_SSL\_VERIFYPEER, false );  
    curl\_setopt ( $curl, CURLOPT\_SSL\_VERIFYHOST, false );  
    curl\_setopt ( $curl, CURLOPT\_URL, $url );  
      
    $res = curl\_exec ( $curl );  
    curl\_close ( $curl );  
      
    return $res;  
\}  
  
  
//获取token值  
function getToken()\{  
    $APPID='wx999999999xxxx390c';  
    $APPSECRET='6b11a5asdfser2344f01983c01472a52';  
    $turl="https://api.weixin.qq.com/cgi-bin/token?grant\_type=client\_credential&appid=".$APPID."&secret=".$APPSECRET;  
    $res = json\_decode(httpGet($turl));  
    $tok=$res->access\_token;  
    return $tok;  
\}  
  
//curlpost请求  
function httpPostData($url,$data,$ck=null) \{  
    $tok=getToken();  
      
    bug($tok);//die;  
    $MENU\_URL =  $url.''.$tok;  
    if(!empty($ck))\{  
        $MENU\_URL.=$ck;  
    \}  
    /\*var\_dump($data);  
    var\_dump($tok);  
    var\_dump($url);\*/  
    $ch = curl\_init ();  
     
    curl\_setopt ( $ch, CURLOPT\_URL, $MENU\_URL );  
    curl\_setopt ( $ch, CURLOPT\_CUSTOMREQUEST, "POST" );  
    curl\_setopt ( $ch, CURLOPT\_SSL\_VERIFYPEER, FALSE );  
    curl\_setopt ( $ch, CURLOPT\_SSL\_VERIFYHOST, FALSE );  
    // curl\_setopt($ch, CURLOPT\_USERAGENT, 'Mozilla/5.0 (compatible; MSIE  
    // 5.01; Windows NT 5.0)');  
    curl\_setopt ( $ch, CURLOPT\_FOLLOWLOCATION, 1 );  
    curl\_setopt ( $ch, CURLOPT\_AUTOREFERER, 1 );  
    curl\_setopt ( $ch, CURLOPT\_POSTFIELDS, $data );  
    curl\_setopt ( $ch, CURLOPT\_RETURNTRANSFER, true );  
     
    $info = curl\_exec ( $ch );  
     
    if (curl\_errno ( $ch )) \{  
        echo 'Errno' . curl\_error ( $ch );  
    \}  
     
    curl\_close ( $ch );  
    $msg=json\_decode($info);  
    return $msg;  
\}