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Edit File: cache.inc.php

<?php
// @codingStandardsIgnoreFile
/**
* s2Member's caching routines.
*
* Copyright: © 2009-2011
* {@link http://websharks-inc.com/ WebSharks, Inc.}
* (coded in the USA)
*
* Released under the terms of the GNU General Public License.
* You should have received a copy of the GNU General Public License,
* along with this software. In the main directory, see: /licensing/
* If not, see: {@link http://www.gnu.org/licenses/}.
*
* @since 3.5
*/
if (!defined('WPINC')) { // MUST have WordPress.
    exit('Do not access this file directly.');
}
if (!class_exists('c_ws_plugin__s2member_cache')) {
    /**
     * s2Member's caching routines.
     *
     * @since 3.5
     */
    class c_ws_plugin__s2member_cache
    {
        /**
         * Page links needed for Constants.
         *
         * Page links are cached into the s2Member options on 15 min intervals.
         * This allows the API Constants to provide quick access to them without being
         * forced to execute {@link http://codex.wordpress.org/Function_Reference/get_page_link get_page_link()}
         * all the time, which piles up DB queries.
         *
         * @since 3.5
         *
         * @return array Array of cached Page links.
         */
        public static function cached_page_links()
        {
            do_action('ws_plugin__s2member_before_cached_page_links', get_defined_vars());

$lwp   = $GLOBALS['WS_PLUGIN__']['s2member']['o']['login_welcome_page'];
            $mop   = $GLOBALS['WS_PLUGIN__']['s2member']['o']['membership_options_page'];
            $fdlep = $GLOBALS['WS_PLUGIN__']['s2member']['o']['file_download_limit_exceeded_page'];

$lwp_cache = isset($GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['login_welcome_page'])
                ? $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['login_welcome_page'] : null;

$mop_cache = isset($GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['membership_options_page'])
                ? $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['membership_options_page'] : null;

$fdlep_cache = isset($GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['file_download_limit_exceeded_page'])
                ? $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['file_download_limit_exceeded_page'] : null;

$links = array('login_welcome_page' => '', 'membership_options_page' => '', 'file_download_limit_exceeded_page' => '');

if (isset($lwp_cache['page'], $lwp_cache['time'], $lwp_cache['link']) && $lwp_cache['page'] === $lwp && $lwp_cache['time'] >= strtotime('-15 minutes') && $lwp_cache['link']) {
                $links['login_welcome_page'] = $lwp_cache['link'];
            } else { // Otherwise, query the database using ``get_page_link()`` and update the cache.
                $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['login_welcome_page']['page'] = $lwp;
                $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['login_welcome_page']['time'] = time();
                $links['login_welcome_page']                                                    = $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['login_welcome_page']['link']                                                    = ($lwp) ? get_page_link($lwp) : home_url('/');
                $cache_needs_updating                                                           = true; // Flag for cache update.
            }
            if (isset($mop_cache['page'], $mop_cache['time'], $mop_cache['link']) && $mop_cache['page'] === $mop && $mop_cache['time'] >= strtotime('-15 minutes') && $mop_cache['link']) {
                $links['membership_options_page'] = $mop_cache['link'];
            } else { // Otherwise, query the database using ``get_page_link()`` and update the cache.
                $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['membership_options_page']['page'] = $mop;
                $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['membership_options_page']['time'] = time();
                $links['membership_options_page']                                                    = $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['membership_options_page']['link']                                                    = ($mop) ? get_page_link($mop) : home_url('/');
                $cache_needs_updating                                                                = true; // Flag for cache update.
            }
            if (isset($fdlep_cache['page'], $fdlep_cache['time'], $fdlep_cache['link']) && $fdlep_cache['page'] === $fdlep && $fdlep_cache['time'] >= strtotime('-15 minutes') && $fdlep_cache['link']) {
                $links['file_download_limit_exceeded_page'] = $fdlep_cache['link'];
            } else { // Otherwise, query the database using ``get_page_link()`` and update the cache.
                $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['file_download_limit_exceeded_page']['page'] = $fdlep;
                $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['file_download_limit_exceeded_page']['time'] = time();
                $links['file_download_limit_exceeded_page']                                                    = $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']['file_download_limit_exceeded_page']['link']                                                    = ($fdlep) ? get_page_link($fdlep) : home_url('/');
                $cache_needs_updating                                                                          = true; // Flag for cache update.
            }
            if (isset($cache_needs_updating) && $cache_needs_updating) {
                update_option('ws_plugin__s2member_cache', $GLOBALS['WS_PLUGIN__']['s2member']['c']['cache']);
            }
            $scheme = is_ssl() ? 'https' : 'http';
            foreach ($links as &$link) { // Update scheme.
                $link = preg_replace('/^https?\:\/\//i', $scheme.'://', $link);
            }
            return apply_filters('ws_plugin__s2member_cached_page_links', $links, get_defined_vars());
        }
    }
}

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