sicktb on "Add a comment field"

Dear all,

Im trying to ad a custom comment field that works the same as the "Message" field. I found all topics and tutorials. But my php skills are not realy updated.

What did i add? I put 'test'. This is how i now tryed to edit the comment-template.php

add_filter('comment_form_default_fields','add_comment_fields');

function comment_form( $args = array(), $post_id = null ) {
	if ( null === $post_id )
		$post_id = get_the_ID();
	else
		$id = $post_id;

	$commenter = wp_get_current_commenter();
	$user = wp_get_current_user();
	$user_identity = $user->exists() ? $user->display_name : '';

	if ( ! isset( $args['format'] ) )
		$args['format'] = current_theme_supports( 'html5', 'comment-form' ) ? 'html5' : 'xhtml';

	$req      = get_option( 'require_name_email' );
	$aria_req = ( $req ? " aria-required='true'" : '' );
	$html5    = 'html5' === $args['format'];
	$fields   =  array(
		'author' => '<p class="comment-form-author">' . '<label for="author">' . __( 'Name' ) . ( $req ? ' <span class="required">*</span>' : '' ) . '</label> ' .
		            '<input id="author" name="author" type="text" value="' . esc_attr( $commenter['comment_author'] ) . '" size="30"' . $aria_req . ' /></p>',
		'email'  => '<p class="comment-form-email"><label for="email">' . __( 'Email' ) . ( $req ? ' <span class="required">*</span>' : '' ) . '</label> ' .
		            '<input id="email" name="email" ' . ( $html5 ? 'type="email"' : 'type="text"' ) . ' value="' . esc_attr(  $commenter['comment_author_email'] ) . '" size="30"' . $aria_req . ' /></p>',
		'url'    => '<p class="comment-form-url"><label for="url">' . __( 'Website' ) . '</label> ' .
		            '<input id="url" name="url" ' . ( $html5 ? 'type="url"' : 'type="text"' ) . ' value="' . esc_attr( $commenter['comment_author_url'] ) . '" size="30" /></p>',
	);

	$required_text = sprintf( ' ' . __('Required fields are marked %s'), '<span class="required">*</span>' );
	$defaults = array(
		'fields'               => apply_filters( 'comment_form_default_fields', $fields ),
		'comment_field'        => '<p class="comment-form-comment"><label for="comment">' . _x( 'Comment', 'noun' ) . '</label> <textarea id="comment" name="comment" cols="45" rows="8" aria-required="true"></textarea></p>',
		'test'			=> '<p class="comment-form-comment"><label for="test">' . _x( 'Comment', 'noun' ) . '</label> <textarea id="comment" name="test" cols="45" rows="8" aria-required="true"></textarea></p>',
		'must_log_in'          => '<p class="must-log-in">' . sprintf( __( 'You must be <a href="%s">logged in</a> to post a comment.' ), wp_login_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
		'logged_in_as'         => '<p class="logged-in-as">' . sprintf( __( 'Logged in as <a href="%1$s">%2$s</a>. <a href="%3$s" title="Log out of this account">Log out?</a>' ), get_edit_user_link(), $user_identity, wp_logout_url( apply_filters( 'the_permalink', get_permalink( $post_id ) ) ) ) . '</p>',
		'comment_notes_before' => '<p class="comment-notes">' . __( 'Your email address will not be published.' ) . ( $req ? $required_text : '' ) . '</p>',
		'comment_notes_after'  => '<p class="form-allowed-tags">' . sprintf( __( 'You may use these <abbr title="HyperText Markup Language">HTML</abbr> tags and attributes: %s' ), ' <code>' . allowed_tags() . '</code>' ) . '</p>',
		'id_form'              => 'commentform',
		'id_submit'            => 'submit',
		'title_reply'          => __( 'Leave a Reply' ),
		'title_reply_to'       => __( 'Leave a Reply to %s' ),
		'cancel_reply_link'    => __( 'Cancel reply' ),
		'label_submit'         => __( 'Post Comment' ),
		'format'               => 'xhtml',
	);

And here i edit the 'test' in the comments.php from the theme

<?php $comment_args = array( 'title_reply'=>'Got Something To Say:',

'fields' => apply_filters( 'comment_form_default_fields', array(

'author' => '<p class="comment-form-author">' . '<label for="author">' . __( 'Your Good Name' ) . '</label> ' . ( $req ? '<span>*</span>' : '' ) .

        '<input id="author" name="author" type="text" value="' . esc_attr( $commenter['comment_author'] ) . '" size="30"' . $aria_req . ' /></p>',  

    'email'  => '<p class="comment-form-email">' .

                '<label for="email">' . __( 'Your Email Please' ) . '</label> ' .

                ( $req ? '<span>*</span>' : '' ) .

                '<input id="email" name="email" type="text" value="' . esc_attr(  $commenter['comment_author_email'] ) . '" size="30"' . $aria_req . ' />'.'</p>',

    'url'    => '' ) ),

    'comment_field' => '<p>' .

                '<label for="comment">' . __( 'Let us know what you have to say:' ) . '</label>' .

                '<textarea id="comment" name="comment" cols="45" rows="8" aria-required="true"></textarea>' .

                '</p>',

    'comment_notes_after' => '',

        'test' => '<p>' .

                '<label for="test">' . __( 'Hoe maak je kaas?:' ) . '</label>' .

                '<textarea id="test" name="test" cols="45" rows="8" aria-required="true"></textarea>' .

                '</p>',

    'comment_notes_after' => '',

);

comment_form($comment_args); ?>