<?php
/**
 * @package Hello_World
 * @version 1.6
 */
/*
Plugin Name: Hello World
Description: Hello, ny name is Dimmy. It is my first plugin and i hope
i will can learn API of it great CMS
Author: Dimmy Walker
Version: 0.10-pre-alpha
*/


function hello_in_title($title)
{
  $post_id = "№ of this post is " . get_the_ID() . "\n";
  return "Hello! $post_id " . $title;
}

add_filter( 'the_title', 'hello_in_title');