php实现微信小程序无需formid订阅发送消息

php实现微信小程序无需formid订阅发送消息，小程序迎来升级，开发者无需收集form表单提交后的formid，通过微信订阅引导用户点击点阅后就可以直接发送消息给微信用户，具体步骤如下：

一、微信小程序后台添加消息模板

选择自己的消息模板

添加模板后就可以看到自己的模板

二、小程序订阅代码

wx.requestSubscribeMessage({
  tmplIds: ['模板id'],//可以是多个
  success (res) { },
  fail (res){ }
})

注意：此段代码必须在bindtap事件中触发，如果在form提交事件中提交会fail并显示错误"requestSubscribeMessage:fail can only be invoked by user TAP gesture."

三、php后台代码

<?php
class Message
{


    private $appId = "";
    private $appSecret = "";
  

    function sendmMsg($openid, $template_id, $content, $url) {
        $tokenUrl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
        $tokenValue = $this->httpGet($tokenUrl);
        
        $TmUrl = "https://api.weixin.qq.com/cgi-bin/message/subscribe/send?access_token=$tokenValue->access_token";
        $data = [
            'touser' => $openid,
            'template_id' => $template_id,
            'page' => $url,
            //小程序消息提醒点击跳转小程序页面路径
            'miniprogram_state' => 'formal',
            "data" => $content
            // "data" => array(
            //     'keyword1' => array('value' => $content),
            //     'keyword2' => array('value' => $username),
            //     'keyword3' => array('value' => date('Y-m-d H:i:s', time()))
            // ),
        ];
        return $this->httpPost($TmUrl, $data);

    }

    private function httpGet($url) {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_TIMEOUT, 500);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl, CURLOPT_URL, $url);
        $res = curl_exec($curl);
        curl_close($curl);
        return json_decode($res);
    }

    private function httpPost($url, $post_data) {
        $postdata = json_encode($post_data, JSON_UNESCAPED_UNICODE);
        $options = array(
            'http' => array(
                'method' => 'POST',
                'header' => 'Content-type:application/json',
                'content' => $postdata,
                'timeout' => 15 * 60 // 超时时间（单位:s）
            )
        );
        $context = stream_context_create($options);
        $result = file_get_contents($url, false, $context);
        return $result;
    }
}
?>

openid是用户的openid

template_id 是我们微信小程序的后台模板id

url是消息跳转小程序的url，如果不填消息就无法跳转

content参数必须是数组的形式传入，类似于

array(
'keyword1' => array('value' => $content),
'keyword2' => array('value' => $username),
'keyword3' => array('value' => date('Y-m-d H:i:s', time()))