wordpress-footer.php

<?php
/**-------------------------------------------------
 * @package Code Snippets
 * @link http://rhythmshahriar.com/codes/
 * @author Rhythm Shahriar <[email protected]>
 * @link http://rhythmshahriar.com
 * @copyright Copyright © 2017, Rhythm Shahriar
---------------------------------------------------*/

// Wordpress Dashboard Footer
add_filter('admin_footer_text','rhythm_remove_footer_admin');
function rhythm_remove_footer_admin() {
    echo '&copy;Copyright 2016 - ' . date( 'Y' ) . ' <a href="http://rhythmshahriar.com">Rhythm Shahriar</a> | Thank you for creating with <a href="https://wordpress.org/">WordPress</a>';
}