Comment fields position order handler

functions.php

<?php
/**
 * Comment fields position order handler
 * @param  array $form Form fields
 * @author Mostafa Soufi <mostafa.soufi@hotmail.com>
 * @link (http://mostafa-soufi.ir)
 */
function comment_field_position_order_handler($form) {
	$final_form['author']	= $form['author'];
	$final_form['email']	= $form['email'];
	$final_form['url']	= $form['url'];
	$final_form['comment']	= $form['comment'];

	return $final_form;
}
add_filter('comment_form_fields', 'comment_field_position_order_handler');