itskp-odense/Backend/controller/upload.php

<?php
//require our bootstrap file for database connection
require "../../bootstrap.php";

use Backend\Model\Post;

if(isset($_POST['title'])){
    //Create a new initialize
    $post = new Post();

    //Get the data from post and save it to the post model
    $post->title = $_POST['title'];
    $post->description = $_POST['description'];

    //Call the save function.
    if(!$post->save()){
        return http_response_code(400);
    }else{
        echo $post->id;
    }
}