确认短信上的电话预览URL：生成假验证/ PHP

Question

we have a created for a client a web app (PHP) for meeting scheduling.

We send SMS to users in order to confirm their meeting, with a link to click to confirm their meeting.

Most of user have enable website preview in SMS on their phone.

How can I checked that the page is loading from a phone 'sms browser previewer' OR is really clicked / loaded by a human ?

A simple get_browser could not help, because browsers previewers are often the browser of the user... and it's not a bad robot crawling something..

The client's process is : the user click the link received on his phone, the meeting is confirmed.

Any tips ? Can't find any idea how to detect that and prevent 'false validation'.

thanks !

Answer 1

Thanks, cookie trick works :

in wp function :

   function set_new_cookie_conf() {
    setcookie( 'confirm_cookie', 'human', time() + 3600, COOKIEPATH, COOKIE_DOMAIN );
}
add_action( 'init', 'set_new_cookie_conf');

in confirm function :

 if(isset($_COOKIE['confirm_cookie'])) {
               //DO THE JOB

             }