Wordpress Add Widget to Theme

fucntions.php

<?php 
/*
Author: uckannet
Link: http://www.uckan.net/2017/01/23/wordpress-spotify-da-dinlediginiz-sarkiyi-bilesen-olarak-sitenizde-gosterin
*/

if(function_exists('register_sidebar')) {
	register_sidebar(array(
		'name' => 'Sidebar', /* optionally change  */
		'before_widget' => '<aside id="%1$s" class="widgets %2$s">',
		'after_widget' => '</aside>',
		'before_title' => '<h3"> ',
		'after_title' => '</h3>',
	));
}