I have created a component that sends an email to each user letting them know that a new post has been created. Side note: this is for a site with 11 users and thats it. The problem I am facing is that it sends emails to users multiple times in a pattern like this based on my foreach loop:

Email 1st user loop:
[email protected]

Email 2nd user loop:
[email protected]
[email protected]

Email 3rd user loop:
[email protected]
[email protected]
[email protected]

And so on where the email user loop in my code below is not for only that user guid, it is an inclusive list of all the previous emails + the new email from the next user guid in line if that makes sense. Here is my com code with my attempt at fixing said problem:

<?php
define('__POST_EMAIL__', ossn_route()->com . 'PostEmail/');

function post_email() {
    ossn_register_callback("wall", "post:created", "postEmailHandler");
}

function postEmailHandler($callback, $type, $params) {
    $mail = new OssnMail;
    $mail->isHTML(true);
    $postuser = ossn_user_by_guid($params['poster_guid']);
    $subject = 'A new post has been created on myjournal.family';
    $message = $postuser->fullname . ' has created a new post. ' . ossn_site_url("post/view/") . $params['subject_guid'];

    $user = new OssnUser;
    $users = $user->getSiteUsers(['page_limit' => false]);
    $done = array();
    foreach ($users as $key => $value) {
        // send the message to all users except the posting user
        // error_log("NEW NOTI: " . ossn_dump($params));
        if ($value->guid != $params['poster_guid']) {
            if(in_array($value->guid, $done, true) != true) {
                $mail->NotifiyUser($value->email, $subject, $message);
                array_push($done, $value->guid);
            }
        }
    }
}

ossn_register_callback('ossn', 'init', 'post_email');