A HitchHackers guide through WordPress

Source code

function comment_form( $args = array(), $post_id = null ) {

	global $id;



	if ( null === $post_id )

		$post_id = $id;

	else

		$id = $post_id;



	$commenter = wp_get_current_commenter();

	$user = wp_get_current_user();

	$user_identity = ! empty( $user->ID ) ? $user->display_name : '';



	$req = get_option( 'require_name_email' );

	$aria_req = ( $req ? " aria-required='true'" : '' );

	$fields =  array(

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

		            '<input id="email" name="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" 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>',

		'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>' ), admin_url( 'profile.php' ), $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 __( 'Your email address will not be published.'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' ),

	);



	$args = wp_parse_args( $args, apply_filters( 'comment_form_defaults', $defaults ) );



	?>

		<?php if ( comments_open() ) : ?>

			<?php do_action( 'comment_form_before' ); ?>

			<div id="respond">

				<h3 id="reply-title"><?php comment_form_title( $args['title_reply'], $args['title_reply_to'] ); ?> <small><?php cancel_comment_reply_link( $args['cancel_reply_link'] ); ?></small></h3>

				<?php if ( get_option( 'comment_registration' ) && !is_user_logged_in() ) : ?>

					<?php echo $args['must_log_in']; ?>

					<?php do_action( 'comment_form_must_log_in_after' ); ?>

				<?php else : ?>

					<form action="<?php echo site_url( '/wp-comments-post.php' ); ?>" method="post" id="<?php echo esc_attr( $args['id_form'] ); ?>">

						<?php do_action( 'comment_form_top' ); ?>

						<?php if ( is_user_logged_in() ) : ?>

							<?php echo apply_filters( 'comment_form_logged_in', $args['logged_in_as'], $commenter, $user_identity ); ?>

							<?php do_action( 'comment_form_logged_in_after', $commenter, $user_identity ); ?>

						<?php else : ?>

							<?php echo $args['comment_notes_before']; ?>

							<?php

							do_action( 'comment_form_before_fields' );

							foreach ( (array) $args['fields'] as $name => $field ) {

								echo apply_filters( "comment_form_field_{$name}", $field ) . "\n";

							}