404.php

<?php
/**
 * 404 Template
 *
 * Displays when a 404 error is produced, such as when a page does not exist.
 *
 * @package     OpusPrimus
 * @since       0.1
 *
 * @author      Opus Primus <in.opus.primus@gmail.com>
 * @copyright   Copyright (c) 2012-2016, Opus Primus
 *
 * This file is part of Opus Primus.
 *
 * Opus Primus is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License version 2, as published by the
 * Free Software Foundation.
 *
 * You may NOT assume that you can use any other version of the GPL.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to:
 *
 *      Free Software Foundation, Inc.
 *      51 Franklin St, Fifth Floor
 *      Boston, MA  02110-1301  USA
 *
 * The license for this software can also likely be found here:
 * http://www.gnu.org/licenses/gpl-2.0.html
 *
 * @version     1.0.1
 * @date        February 21, 2013
 * Modified action hooks to more semantic naming convention:
 * `opus_<section>_<placement>`
 * Change classes from using underscores to using hyphens
 *
 * @version     1.4
 * @date        April 15, 2015
 * Minor correction to i18n string, null does not need to be translated
 */

$opus_archives   = OpusPrimusArchives::create_instance();
$opus_structures = OpusPrimusStructures::create_instance();

get_header( '404' );

/** Add empty hook before content */
do_action( 'opus_content_before' ); ?>

	<div class="content-wrapper cf">

		<?php
		/** Add empty hook at top of the content */
		do_action( 'opus_content_top' );

		/** Open the necessary layout CSS classes */
		echo $opus_structures->layout_open();

		/** Add empty action before the_Loop */
		do_action( 'opus_the_loop_before' ); ?>

		<div class="the-loop">

			<?php
			printf(
				'<h1 class="opus-404-title-text">%1$s</h1>',
				apply_filters( 'opus_404_title_text', __( 'Something seems to have gone bust ...', 'opus-primus' ) )
			);

			/** Use action hook to add image - see Structures class for hook call */
			do_action( 'opus_404_image' );

			printf(
				'<p class="opus-404-message-text">%1$s</p>',
				apply_filters( 'opus_404_message_text', __( 'This is the 404 error page; we seemed to have lost what you are looking for.', 'opus-primus' ) )
			);

			printf(
				'<p class="opus-404-posts-text">%1$s</p>',
				apply_filters( 'opus_404_posts_text', __( 'Were you looking for a recent post?', 'opus-primus' ) )
			);

			/** Use the_widget to display a list of recent posts */
			the_widget(
				'WP_Widget_Recent_Posts',
				$instance = array(
					'title'     => '',
					'number'    => '5',
					'show_date' => true
				)
			);

			/** Display links to archives */
			printf(
				'<p class="opus-404-category-text">%1$s</p>',
				apply_filters( 'opus_404_category_text', __( 'Maybe you were looking for one these categories ...', 'opus-primus' ) )
			);

			/** Display a list of categories to choose from */
			$opus_archives->categories_archive(
				array(
					'orderby'      => 'count',
					'order'        => 'desc',
					'show_count'   => 1,
					'hierarchical' => 0,
					'title_li'     => '<span class="title">' . apply_filters( 'opus_404_top_10_title', __( 'Top 10 Categories by Post Count:', 'opus-primus' ) ) . '</span>',
					'number'       => 10,
				)
			);

			printf(
				'<p class="opus-404-tag-text">%1$s</p>',
				apply_filters( 'opus_404_tag_text', __( '... or maybe you are interested in one of these tags?', 'opus-primus' ) )
			);

			/** Display a list of tags to choose from */
			$opus_archives->archive_cloud(
				array(
					'taxonomy' => 'post_tag',
					'orderby'  => 'count',
					'order'    => 'DESC',
					'number'   => 10,
				)
			); ?>

		</div>
		<!-- #the-loop -->

		<?php
		/** Add empty action after the_Loop */
		do_action( 'opus_the_loop_after' );

		get_sidebar( '404' );

		/** Close the classes written by the layout_open call */
		echo $opus_structures->layout_close();

		/** Add empty hook at the bottom of the content */
		do_action( 'opus_content_bottom' ); ?>

	</div><!-- #content-wrapper -->

<?php
/** Add empty hook after the content */
do_action( 'opus_content_after' );

get_footer( '404' );