recruit/application/index/logic/wechatlogic.php

<?php
/*
 * @Author: wang jun
 * @Date: 2022-01-18 11:12:23
 * @Last Modified by: wang jun
 * @Last Modified time: 2022-01-18 14:17:55
 * 微信类
 */
namespace app\index\logic;

use app\index\logic\wxBizDataCrypt;
use app\index\model\usermodel;

class wechatlogic
{
    public function getselfwxconfig()
    {
        $config = [
            //'appid' => 'wx8788dcdf3d075963',
            'appid' => 'wx8240b08d4e0b8954',
            //'appSecret' => '0d1928572155d59f0c66c30378e42bfb',
            'appSecret' => 'df07e160bbb1235e7b737cbb7c87a0ed',
        ];
        return $config;
    }
    private function curl_get($url, &$httpCode = 0)
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

        //不做证书校验,部署在linux环境下请改为true
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
        $file_contents = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        return $file_contents;
    }

    private function getAccessToken()
    {
        $config = $this->getselfwxconfig();
        $appid = $config['appid'];
        $appSecret = $config['appSecret'];
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . $appid . "&secret=" . $appSecret;
        $result = $this->curl_get($url);
        $wxResult = json_decode($result, true);
        return $wxResult;
    }

    //开启curl post请求
    private function sendCmd($url, $data)
    {
        $curl = curl_init(); // 启动一个CURL会话
        curl_setopt($curl, CURLOPT_URL, $url); // 要访问的地址
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检测
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2); // 从证书中检查SSL加密算法是否存在
        curl_setopt($curl, CURLOPT_HTTPHEADER, array('Expect:')); //解决数据包大不能提交
        curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转
        curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // 自动设置Referer
        curl_setopt($curl, CURLOPT_POST, 1); // 发送一个常规的Post请求
        curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Post提交的数据包
        curl_setopt($curl, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循
        curl_setopt($curl, CURLOPT_HEADER, 0); // 显示返回的Header区域内容
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // 获取的信息以文件流的形式返回

        $tmpInfo = curl_exec($curl); // 执行操作
        if (curl_errno($curl)) {
            echo 'Errno' . curl_error($curl);
        }
        curl_close($curl); // 关键CURL会话
        return $tmpInfo; // 返回数据
    }

    /**
     * 获取openid
     * 20220118
     * wj
     * code 必填
     */
    public function getOpenid($arr)
    {
        $code = $arr['code'];
        $config = $this->getselfwxconfig();
        $appid = $config['appid'];
        $appSecret = $config['appSecret'];

        $wxUrl = 'https://api.weixin.qq.com/sns/jscode2session?appid=%s&secret=%s&js_code=%s&grant_type=authorization_code';
        $getUrl = sprintf($wxUrl, $appid, $appSecret, $code);
        $result = $this->curl_get($getUrl);
        $wxResult = json_decode($result, true);
        if (empty($wxResult)) {
            return backarr(0, "错误");
        } else {
            $logfail = array_key_exists('errcode', $wxResult);
            if ($logfail) {
                return backarr(1, 'success', $logfail['errmsg']);
                trace(json_encode($wxResult));
            } else {
                $openid = $wxResult['openid'];
                if (!isset($wxResult['unionid'])) {
                    trace(json_encode($wxResult));
                }
                $data = ['openid' => $openid];
                if (isset($wxResult['unionid'])) {
                    $unionid = $wxResult['unionid'];
                    $data['unionid'] = $unionid;
                    $t_m = new usermodel();
                    $urec = $t_m->getinfobyopenid($openid);
                    if ($urec) {
                        if (!$urec['union_id']) {
                            $t_m->updateunionidbyopenid($openid, $unionid);
                        }
                    }
                }
                return backarr(1, 'success', $data);
            }
        }
    }

    //获得二维码
    public function create_qrcode($arr)
    {
        $sharepage = request()->param();
        $qr_path = "./Uploads/";
        if (!file_exists($qr_path . 'user/')) {
            mkdir($qr_path . 'user/', 0700, true); //判断保存目录是否存在，不存在自动生成文件目录
        }
        $filename = 'user/' . time() . '.png';
        $file = $qr_path . $filename;

        $access = $this->getAccessToken();
        $access_token = $access['access_token'];
        $url = 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=' . $access_token;

        $qrcode = array(
            'scene' => $arr['scene'], //二维码所带参数
            'width' => 200,
            'page' => $arr['page'], //二维码跳转路径（要已发布小程序）
            'auto_color' => true,
        );

        $result = $this->sendCmd($url, json_encode($qrcode)); //请求微信接口

        $errcode = json_decode($result, true)['errcode'];
        $errmsg = json_decode($result, true)['errmsg'];
        if ($errcode) {
            trace(json_encode($result));
            return backarr(0, $errmsg);
        }

        $res = file_put_contents($file, $result); //将微信返回的图片数据流写入文件

        if ($res === false) {
            echo '生成二维码失败';
        } else {
            $path = getselfurl('default') . "/Uploads/" . $filename;
            return backarr(1, 'success', ['path' => $path]);
        }
    }

    //网上代骊，待修改
    public function WxDecode()
    {
        // 接收参数
        $data = request()->param();
        $config = $this->getselfwxconfig();
        $appid = $config['appid'];
        $appSecret = $config['appSecret'];
        $grant_type = "authorization_code"; //授权（必填）
        $code = $data['code']; //有效期5分钟 登录会话

        $encryptedData = $data['encryptedData'];
        $iv = $data['iv'];

        // 拼接url
        $url = "https://api.weixin.qq.com/sns/jscode2session?" . "appid=" . $appid . "&secret=" . $appsecret . "&js_code=" . $code . "&grant_type=" . $grant_type;
        $res = json_decode($this->curl_get($url), true);

        $sessionKey = $res['session_key']; //取出json里对应的值
        $pc = new wxBizDataCrypt($appid, $sessionKey);
        $errCode = $pc->decryptData($encryptedData, $iv, $data);

        //这里是按二手设备做的，以后应该单独变成逻辑，由逻辑层完成，以应对不同的需求
        if ($errCode == 0) {
            $result['code'] = 200;
            $resultData['msg'] = '解密成功';
            $resultData['userInfo'] = json_decode($data);
            $result['resultData'] = $resultData;
            echo json_encode($result);

        } else {
            return json($errCode);
        }
    }

    //获得二维码
    /**
     * 保存并下载二维码
     * 20220118
     * wj
     * scene page 必填
     */
    public function download_qrcode($arr)
    {
        $qr_path = "./Uploads/";
        if (!file_exists($qr_path . 'user/')) {
            mkdir($qr_path . 'user/', 0700, true); //判断保存目录是否存在，不存在自动生成文件目录
        }
        $filename = 'user/' . time() . '.png';
        $file = $qr_path . $filename;

        $access = $this->getAccessToken(); //json_decode($this->getAccessToken(),true);
        $access_token = $access['access_token'];
        $url = 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=' . $access_token;

        $qrcode = array(
            'scene' => $arr['scene'], //二维码所带参数
            'width' => 200,
            'page' => $arr['page'], //二维码跳转路径（要已发布小程序）
            'auto_color' => true,
        );

        $result = $this->sendCmd($url, json_encode($qrcode)); //请求微信接口

        $errcode = json_decode($result, true)['errcode'];
        $errmsg = json_decode($result, true)['errmsg'];
        if ($errcode) {
            trace(json_encode($result));
            return backarr(0, $errmsg);
        }
        $res = file_put_contents($file, $result); //将微信返回的图片数据流写入文件
        $strfile = 'Uploads/' . $filename;
        $file1 = fopen($strfile, 'r');
        header("Content-Type: application/force-download");
        header("Content-Type: application/octet-stream");
        header("Content-Type: application/download");
        header('Content-Disposition:inline;filename="' . $strfile . '"');
        ob_clean();
        flush();
        echo fread($file1, filesize($file));
        fclose($file1);
        if ($res === false) {
            echo '生成二维码失败';
        } else {
            $path = getselfurl('default') . "/Uploads/" . $filename;
            return backarr(1, 'success', ['path' => $path]);
        }
    }
}