itskp-odense/Backend/controller/deletePost.php

<?php

require "accessControl.php";
require "../../bootstrap.php";

use Backend\Model\Post;

if(isset($_GET['delete_id'])){
   $id = $_GET['delete_id'];
    $findId = Post::query()->findOrFail($id);
    if(!$findId->delete()){
       return "Error could not delete";
    }else{
        return "Record deleted";
    }
}