1. 程式人生 > 實用技巧 >微信小程式實現生成二維碼圖片進行頁面跳轉頁面並將圖片儲存到本地

微信小程式實現生成二維碼圖片進行頁面跳轉頁面並將圖片儲存到本地

直接上程式碼

public function getAccesstoken(){
        $appid = '';                     /*小程式appid*/
        $srcret = '';      /*小程式祕鑰*/
        $tokenUrl="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$srcret;
        $getArr=array();
        $tokenArr=json_decode($this
->send_post($tokenUrl,$getArr,"GET")); $access_token=$tokenArr->access_token; return $access_token; } public function send_post($url, $post_data,$method='POST') { $postdata = http_build_query($post_data); $options = array( 'http' => array(
'method' => $method, //or GET 'header' => 'Content-type:application/x-www-form-urlencoded', 'content' => $postdata, 'timeout' => 15 * 60 // 超時時間(單位:s) ) ); $context = stream_context_create($options); $result = file_get_contents($url, false
, $context); return $result; } public function api_notice_increment($url, $data){ $ch = curl_init(); $header=array('Accept-Language:zh-CN','x-appkey:114816004000028','x-apsignature:933931F9124593865313864503D477035C0F6A0C551804320036A2A1C5DF38297C9A4D30BB1714EC53214BD92112FB31B4A6FAB466EEF245710CC83D840D410A7592D262B09D0A5D0FE3A2295A81F32D4C75EBD65FA846004A42248B096EDE2FEE84EDEBEBEC321C237D99483AB51235FCB900AD501C07A9CAD2F415C36DED82','x-apversion:1.0','Content-Type:application/x-www-form-urlencoded','Accept-Charset: utf-8','Accept:application/json','X-APFormat:json'); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST"); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURLOPT_HTTPHEADER, $header); curl_setopt($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); $tmpInfo = curl_exec($ch); // var_dump($tmpInfo); // exit; if (curl_errno($ch)) { return false; }else{ // var_dump($tmpInfo); return $tmpInfo; } } /*上面生成的是數量限制10萬的二維碼,下面重寫數量不限制的碼*/ /*getWXACodeUnlimit*/ /*碼一,圓形的小程式二維碼,數量限制一分鐘五千條*/ /*45009 呼叫分鐘頻率受限(目前5000次/分鐘,會調整),如需大量小程式碼,建議預生成。 41030 所傳page頁面不存在,或者小程式沒有釋出*/ public function mpcode($page,$cardid){ //引數 // $postdata['scene']="nidaodaodao"; $postdata['scene']=$cardid; // 寬度 $postdata['width']=430; // 頁面 $postdata['page']=$page; // $postdata['page']="pages/postcard/postcard"; // 線條顏色 $postdata['auto_color']=false; //auto_color 為 false 時生效 $postdata['line_color']=['r'=>'0','g'=>'0','b'=>'0']; // 是否有底色為true時是透明的 $postdata['is_hyaline']=true; $post_data = json_encode($postdata); $access_token=$this->getAccesstoken(); $url="https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=".$access_token; $result=$this->api_notice_increment($url,$post_data); $data='image/png;base64,'.base64_encode($result); return $data; // echo '<img src="data:'.$data.'">'; } /*碼二,正方形的二維碼,數量限制呼叫十萬條*/ public function qrcodes($id){ $path="pages/postcard/postcard?id=".$id; // 寬度 $postdata['width']=430; // 頁面 $postdata['path']=$path; $post_data = json_encode($postdata); $access_token=$this->getAccesstoken(); $url="https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=".$access_token; $result=$this->api_notice_increment($url,$post_data); return base64_encode($result); }

呼叫:當增加資料時 將增加的這條資料主鍵id傳參到生成二維碼方法

    public function add($data)
    {
        $path = 'assets/qrcode/'.time().'baseCode.jpg';
        $res = $this->insertGetId(array_merge(['qrcode'=>$path],$data));
        $model = new Qrcode();
        file_put_contents($path, base64_decode($model->qrcodes($res)));
        return true;
    }