public function sendall(){
    $all_openid=$this->tosendall();
    foreach($all_openid as $value){
       $this->set_msg($value);
    }
}
public function tosendall(){
    $access_token=$this->getAccesstoken();
    $url="https://api.weixin.qq.com/cgi-bin/user/get?access_token={$access_token}&next_openid="
 
;

    $ch=curl_init($url);
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    $data=curl_exec($ch);
    $data=json_decode($data,true);
    return $data['data']['openid'];
}
public function set_msg($openid){
    
 
$access_token = $this->getAccesstoken();
    $template = array(
        "touser" => "$openid",//使用者openid
        "template_id" => "-dRb-6prGX6AO6Pt_uTirmH2fztkVHLFG7HHfISwjXg",//模板id
        "url" => "",//跳轉連結
        "data" => array(
            'first' => array('value' => urlencode
 
("為更好的為您提供服務，原公眾號功能升級，現已升級完畢並更名為惠三秦，特此通知。")),
            'keyword1' => array('value' => urlencode("公眾號功能")),
            'keyword2' => array('value' => urlencode("全站業務")),
            'keyword3' => array('value' => urlencode("2018年3月30日")),
            'keyword4' => array('value' => urlencode("現已升級完畢")),
            'remark' => array('value' => urlencode("點選這裡，更多優惠！更多驚喜都在等你來發現。")),
        )
    );
    $json_template = json_encode($template);
    $url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=" . $access_token;
    $json = $this->curl_post($url, urldecode($json_template));
    $rs = json_decode($json, true);
    if ($rs['errcode'] == 0) {echo 'ok';
    } else {
        echo "no";
        print_r($rs);
    }
}