### 一、二维码生成类库 ``` <?php /** * Created by PhpStorm. * User: 项羽 * Date: 2019/1/22 * Time: 22:55 * 生成小程序码接口地址 https://developers.weixin.qq.com/miniprogram/dev/api/getWXACodeUnlimit.html */ namespace app\api\controller; class Spreadcode { // 获取accesstoken public function getAccesstoken(){ $appid = ''; /*小程序appid*/ $srcret = ''; /*小程序秘钥*/ $tokenUrl="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$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 // 超时时间（单位: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 $tmpInfo; } } /*上面生成的是数量限制10万的二维码，下面重写数量不限制的码*/ /*getWXACodeUnlimit*/ /*码一，圆形的小程序二维码，数量限制一分钟五千条*/ /*45009 调用分钟频率受限(目前5000次/分钟，会调整)，如需大量小程序码，建议预生成。 41030 所传page页面不存在，或者小程序没有发布*/ public function mpcode($page,$cardid){ //参数 // $postdata['scene']="nidaodaodao"; $postdata['scene']=$cardid; // 宽度 $postdata['width']=430; // 页面 $postdata['page']=$page; // $postdata['page']="pages/postcard/postcard"; // 线条颜色 $postdata['auto_color']=false; //auto_color 为 false 时生效 $postdata['line_color']=['r'=>'0','g'=>'0','b'=>'0']; // 是否有底色为true时是透明的 $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.'">'; } /*码二，正方形的二维码，数量限制调用十万条*/ public function qrcodes(){ $path="pages/postcard/postcard"; // 宽度 $postdata['width']=430; // 页面 $postdata['path']=$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); $data='image/png;base64,'.base64_encode($result); echo '<img src="data:'.$data.'">'; } } ``` ### 二、php调用方法 ``` $page='pages/postcard/postcard'; $cardid="10"; $class = new \app\api\controller\Spreadcode(); $mpcodeimg=$class->mpcode($page,$cardid); $dataret['mpcodeimg']=$mpcodeimg; $this->assign('retdata',$dataret); ``` ### 三、前端页面调用 ``` <img src="data:{$retdata['mpcodeimg']}" /> ```