wpplugin.simple-post-expiration.php

<?php
/**
 * Plugin Name: Simple Post Expiration
 * Plugin URL: https://github.com/cubetech/Simple-Post-Expiration/
 * Description: A simple plugin that allows you to set an expiration date on posts. Once a post is expired, "Expired" will be prefixed to the post title.
 * Version: 3.2.1
 * Author: Mark Howells-Mead (original Pippin Williamson)
 * Author URI: https://www.cubetech.ch/
 * Contributors: mordauk, rzen, markhowellsmead
 * Text Domain: wpplugin-simple-post-expiration
 * Domain Path: languages
 *
 * Simple Post Expiration is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * any later version.
 *
 * Simple Post Expiration 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 Simple Post Expiration. If not, see <http://www.gnu.org/licenses/>.
*/

define('PW_SPE_ASSETS_URL', plugin_dir_url(__FILE__) . 'assets') ;

if (is_admin()) {
	require_once dirname(__FILE__) . '/includes/metabox.php';
}

require_once dirname(__FILE__) . '/includes/shortcodes.php';
require_once dirname(__FILE__) . '/includes/widgets.php';

/**
 * Load our plugin's text domain to allow it to be translated
 *
 * @access  public
 * @since   1.0
*/
function pw_spe_text_domain()
{
	// Load the default language files
	load_plugin_textdomain('wpplugin-simple-post-expiration', false, basename(dirname(__FILE__)) . '/languages');
}
add_action('plugins_loaded', 'pw_spe_text_domain');

/**
 * Determines if a post is expired
 *
 * @access public
 * @since 1.0
 * @return bool
 */
function pw_spe_is_expired($post_id = 0)
{

	$expires = get_post_meta($post_id, 'pw_spe_expiration', true);

	if (! empty($expires)) {
		// Get the current time and the post's expiration date
		$current_time = current_time('timestamp');
		$expiration   = strtotime($expires, current_time('timestamp'));

		// Determine if current time is greater than the expiration date
		if ($current_time >= $expiration) {
			return true;
		}
	}

	return false;
}

/**
 * Filters the post titles
 *
 * @access public
 * @since 1.0
 * @return void
 */
function pw_spe_filter_title($title = '', $post_id = 0)
{

	if (pw_spe_is_expired($post_id)) {
		// Post is expired so attach the prefix
		$prefix = __('Expired:', 'wpplugin-simple-post-expiration');
		$title  = $prefix . '&nbsp;' . $title;
	}

	return $title;
}
add_filter('the_title', 'pw_spe_filter_title', 100, 2);