PHP生成微信小程序二维码

wxQRcode();
 function wxQRcode(){
        $appid = '************';//小程序appid
        $secret = '******************************';//小程序secret
        $url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$appid.'&secret='.$secret;
        session_start();
        $lifeTime = 2 * 3600;
        setcookie(session_name(), session_id(), time() + $lifeTime, "/");
        if(empty($access_token)){
            $access_token_data = getJson($url);
            $access_token = $access_token_data['access_token'];
            $_SESSION['access_token'] = $access_token;
        }
        if(!empty($access_token)){
            $zhi= rand(100000,999999);//参数
            $url = 'https://api.weixin.qq.com/wxa/getwxacode?access_token='.$access_token;
            $data['path'] = 'pages/index/index?id='.$zhi;//小程序地址 'pages/index?字段='.$值
           // $data['scene'] = 'type=qrcode';//(string类型,必须是数字)
            $data['width'] = 200;
            $result = curlPost($url,$data,'POST');
            $filename = $zhi;  //文件名
            $ret = file_put_contents('uploads/'.$filename.'.png', $result, true);
            $path='uploads/'.$filename.'.png';
            echo '';
        }
 
 }
function getJson($url,$data=array(),$method='GET'){
        $ch = curl_init();//1.初始化
        curl_setopt($ch, CURLOPT_URL, $url);//2.请求地址
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);//3.请求方式
        //4.参数如下
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        if($method=="POST"){//5.post方式的时候添加数据
            $data = json_encode($data);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($ch);
        curl_close($ch);
        return json_decode($output, true);
}
 
function curlPost($url,$data,$method){
        $ch = curl_init();   //1.初始化
        curl_setopt($ch, CURLOPT_URL, $url); //2.请求地址
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);//3.请求方式
        //4.参数如下
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);//https
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');//模拟浏览器
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
        curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
        curl_setopt($ch, CURLOPT_HTTPHEADER,array('Accept-Encoding: gzip, deflate'));//gzip解压内容
        curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');
 
        if($method=="POST"){//5.post方式的时候添加数据
            $data = json_encode($data);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        }
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $tmpInfo = curl_exec($ch);//6.执行
 
        if (curl_errno($ch)) {//7.如果出错
            return curl_error($ch);
        }
        curl_close($ch);//8.关闭
        return $tmpInfo;
}