yuan/application/api/controller/WeChat.php

<?php

namespace app\api\controller;

use app\common\controller\Api;

/**
 * 政策集锦
 */
class WeChat extends Api
{

    //微信授权配置信息

    private $wechat_config = [

        'appid' => 'wxe02aa578255f9184 ',

        'appsecret' => '39ec8add0b8d4ed794e9cb330a334538',

    ];


    public function __construct()
    {

        $this->wechat_config = $this->wechatConfig();

    }

    /**
     * 获取秘钥配置
     * @return [type] 数组
     */

    public function wechatConfig()
    {

//        $wechat_config = array_merge($this->wechat_config, config('wechat.oauth'));
        $wechat_config = $this->wechat_config;

        return $wechat_config;

    }

    /**
     * 获取openid
     * @return string|mixed
     */

    public function getUserAccessUserInfo($code = "")

    {


        if (empty($code)) {

            $baseUrl = request()->url(true);

            $url = $this->getSingleAuthorizeUrl($baseUrl, "123");

            Header("Location: $url");

            exit();

        } else {

            $access_token = $this->getSingleAccessToken($code);

            return $this->getUserInfo($access_token);

        }

    }

    /**
     * 微信授权链接
     * @param string $redirect_uri 要跳转的地址
     * @return [type]               授权链接
     */

    public function getSingleAuthorizeUrl($redirect_url = "", $state = '1')
    {

        $redirect_url = urlencode($redirect_url);

        return "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" . $this->wechat_config['appid'] . "&redirect_uri=" . $redirect_url . "&response_type=code&scope=snsapi_userinfo&state={$state}#wechat_redirect";

    }

    /**
     * 获取token
     * @return [type] 返回token
     */

    public function getSingleAccessToken($code)
    {


        $url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . $this->wechat_config['appid'] . '&secret=' . $this->wechat_config['appsecret'] . '&code=' . $code . '&grant_type=client_credential';

//        $appid = $this->wechat_config['appid'];
//        $secret = "39ec8add0b8d4ed794e9cb330a334538";
//        echo $secret;die;
//        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$secret";
//        dump($url);die;
        $access_token = $this->https_request($url);
        dump($access_token);die;
        return $access_token;

    }


    /**
     * 发送curl请求
     * @param $url string
     * @param return array|mixed
     */

    public function https_request($url)

    {

        $curl = curl_init();

        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);

        curl_setopt($curl, CURLOPT_URL, $url);

        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);

        $AjaxReturn = curl_exec($curl);
dump($AjaxReturn);die;
        //获取access_token和openid,转换为数组

        $data = json_decode($AjaxReturn, true);

        curl_close($curl);

        return $data;

    }

    /**
     * @explain
     * 通过code获取用户openid以及用户的微信号信息
     * @return array|mixed
     * @remark
     * 获取到用户的openid之后可以判断用户是否有数据，可以直接跳过获取access_token,也可以继续获取access_token
     * access_token每日获取次数是有限制的，access_token有时间限制，可以存储到数据库7200s. 7200s后access_token失效
     **/

    public function getUserInfo($access_token = [])

    {

        if (!$access_token) {

            return [

                'code' => 0,

                'msg' => '微信授权失败',

            ];

        }

        $userinfo_url = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $access_token['access_token'] . '&openid=' . $access_token['openid'] . '&lang=zh_CN';

        $userinfo_json = $this->https_request($userinfo_url);


        //获取用户的基本信息，并将用户的唯一标识保存在session中

        if (!$userinfo_json) {

            return [

                'code' => 0,

                'msg' => '获取用户信息失败！',

            ];

        }

        return $userinfo_json;

    }
    /**
     * 发送HTTP请求方法
     * @param  string $url    请求URL
     * @param  array  $params 请求参数
     * @param  string $method 请求方法GET/POST
     * @return array  $data   响应数据
     */
    function httpCurl($url, $params, $method = 'POST', $header = array(), $multi = false){
        date_default_timezone_set('PRC');
        $opts = array(
            CURLOPT_TIMEOUT        => 30,
            CURLOPT_RETURNTRANSFER => 1,
            CURLOPT_SSL_VERIFYPEER => false,
            CURLOPT_SSL_VERIFYHOST => false,
            CURLOPT_HTTPHEADER     => $header,
            CURLOPT_COOKIESESSION  => true,
            CURLOPT_FOLLOWLOCATION => 1,
            CURLOPT_COOKIE         =>session_name().'='.session_id(),
        );
        /* 根据请求类型设置特定参数 */
        switch(strtoupper($method)){
            case 'GET':
                // $opts[CURLOPT_URL] = $url . '?' . http_build_query($params);
                // 链接后拼接参数  &  非？
                $opts[CURLOPT_URL] = $url . '?' . http_build_query($params);
                break;
            case 'POST':
                //判断是否传输文件
                $params = $multi ? $params : http_build_query($params);
                $opts[CURLOPT_URL] = $url;
                $opts[CURLOPT_POST] = 1;
                $opts[CURLOPT_POSTFIELDS] = $params;
                break;
            default:
                throw new Exception('不支持的请求方式！');
        }
        /* 初始化并执行curl请求 */
        $ch = curl_init();
        curl_setopt_array($ch, $opts);
        $data  = curl_exec($ch);
        $error = curl_error($ch);
        curl_close($ch);
        if($error) throw new Exception('请求发生错误：' . $error);
        return  $data;
    }
    /**
     * 微信信息解密
     * @param  string  $appid  小程序id
     * @param  string  $sessionKey 小程序密钥
     * @param  string  $encryptedData 在小程序中获取的encryptedData
     * @param  string  $iv 在小程序中获取的iv
     * @return array 解密后的数组
     */
    function decryptData( $appid , $sessionKey, $encryptedData, $iv ){
        $OK = 0;
        $IllegalAesKey = -41001;
        $IllegalIv = -41002;
        $IllegalBuffer = -41003;
        $DecodeBase64Error = -41004;

        if (strlen($sessionKey) != 24) {
            return $IllegalAesKey;
        }
        $aesKey=base64_decode($sessionKey);

        if (strlen($iv) != 24) {
            return $IllegalIv;
        }
        $aesIV=base64_decode($iv);

        $aesCipher=base64_decode($encryptedData);

        $result=openssl_decrypt( $aesCipher, "AES-128-CBC", $aesKey, 1, $aesIV);
        $dataObj=json_decode( $result );
        if( $dataObj  == NULL )
        {
            return $IllegalBuffer;
        }
        if( $dataObj->watermark->appid != $appid )
        {
            return $DecodeBase64Error;
        }
        $data = json_decode($result,true);

        return $data;
    }

    /**
     * 请求过程中因为编码原因+号变成了空格
     * 需要用下面的方法转换回来
     */
    function define_str_replace($data)
    {
        return str_replace(' ','+',$data);
    }
}