yanglao/addons/service/library/MiniQrcode.php

<?php
namespace addons\service\library;

use app\api\model\service\ProjectConfigure;
use think\Cache;
use fast\Random;

class MiniQrcode
{
    protected $appid;
    protected $secret;
    protected $accessUrl = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=';
    protected $url = "https://api.weixin.qq.com/wxa/getwxacode?access_token=";
    public function __construct()
    {
        $serviceConfig = \app\api\model\service\ProjectConfigure::getProjectConfig();
        $this->appid = $serviceConfig['userappid'];
        $this->secret = $serviceConfig['usersecret'];
    }
    // 获取ACCESS_TOKEN
    public function getAccessToken()
    {
        $key = 'user_wx_access_token';
        $token = Cache::get($key);
        if(!$token)
        {
            $url = $this->accessUrl . $this->appid . '&secret=' . $this->secret;
            $res = json_decode(\fast\Http::get($url), true);
            $token = $res['access_token'];
            Cache::set($key,$token,7000);
        }
        return $token;
    }

    // 生成小程序二维码
    public function createMiniProgramQRCode($path, $width = 430,$scene='')
    {
        $accessToken = $this->getAccessToken();
        $url = $this->url.$accessToken;
        $data = json_encode(['scene'=>$scene,'path' => $path, 'width' => $width]);
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json', 'Content-Length: ' . strlen($data)));
        $result = curl_exec($ch);
        if (curl_errno($ch)) {
            curl_close($ch);
            return false;
        }
        $path ='/public/uploads/qrcode/'.date("Y-m-d").'/';
        if (!is_dir(ROOT_PATH.$path))
        {
            mkdir(ROOT_PATH.$path,0777,true);
        }
        $file = "/uploads/qrcode/".date("Y-m-d").'/'.time().Random::alnum().".png";
        $fileName = $_SERVER['DOCUMENT_ROOT'].$file;
        file_put_contents($fileName, $result);
        curl_close($ch);
        return $file;
    }



}