Quickly replace the text in Divi's footer

functions.php

<?php
function mck_replace_footer_text( $text ){

	if ( 'Designed by %1$s | Powered by %2$s' === $text ) {
		$text = '&copy; ' . date('Y') . ' ' . get_bloginfo( 'name' ) . '. All rights reserved.';
	}

	return $text;
}
add_filter( 'gettext', 'mck_replace_footer_text' );