微信小程序通知（公众号）

  //调用
$this->accessToken($code, $title, $amount , date('Y-m-d H:i:s',time()));

 /*
    *获取access_token
    *$code  前端传过来
    *$title = 标题
    *$amount = 金额
    *$time = 时间
    */
    protected function accessToken($code = '', $title = '', $amount = '', $time = ''){
        $appid = '****';
        $secret = '****';
        // 设置请求的 URL
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$secret";
        
        // 初始化 cURL
        $ch = curl_init();
        
        // 设置 cURL 选项
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        
        // 执行请求并获取响应
        $response = curl_exec($ch);
        
        // 检查是否有错误
        if (curl_errno($ch)) {
            return false;
        }
        
        // 关闭 cURL
        curl_close($ch);
        $response = json_decode($response,true);
        if(!isset($response['access_token'])) return false;
        //获取access_token
        $accessToken = $response['access_token'];
        //获取用户的openId
        $userOpenId = $this->userOpenId($appid,$secret,$code);
        if (!$userOpenId) return false;
        //结构体 （根据公众平台选择推送模版自行配置）
        $info = (object)array(
                'touser' => $userOpenId['openid'],
                'template_id' => 'SXo-qjIdtIPbD-P1w6wZ-BMJkGv0TIveHrJkbw_3Z3Q',
                'page' => '/pages/order/index',
                'data' => array(
                        'thing7'=>['value'=>$title],
                        'amount4'=>['value'=>$amount],
                        'time5'=>['value'=>$time],
                    ),
            );
            
        //发送订阅消息
        return $this->subscribe($info,$accessToken);
    }
    
    //获取用户的openId
    protected function userOpenId($appid, $secret, $code)
    {
        $url = "https://api.weixin.qq.com/sns/jscode2session?appid=".$appid."&secret=".$secret."&js_code=".$code."&grant_type=authorization_code";
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        if (!empty($data)) {
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($curl);
        if (curl_errno($curl)) {
            return false;
        }
        curl_close($curl);
        $data = json_decode($output, true);
        if (isset($data['openid'])) {
            return $data;
        }
        return false;
    }
    
    //发送订阅消息
    protected function subscribe($data,$access_token){
        $url = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=".$access_token;
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        if (!empty($data)) {
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($data));
        }
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($curl);
        if (curl_errno($curl)) {
            return false;
        }
        curl_close($curl);
        $info = json_decode($output, true);
        if ($info['errcode'] == '0') {
            return true;
        }
        return false;
    }