purgecaches.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * This script triggers a full purging of system caches,
 * this is useful mostly for developers who did not disable the caching.
 *
 * @package    core
 * @copyright  2010 Petr Skoda {@link http://skodak.org}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once('../config.php');
require_once($CFG->libdir.'/adminlib.php');

$confirm = optional_param('confirm', 0, PARAM_BOOL);

admin_externalpage_setup('purgecaches');

require_login();
require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));

$return = new moodle_url('/');
if (isset($_SERVER['HTTP_REFERER']) and !empty($_SERVER['HTTP_REFERER'])) {
    if ($_SERVER['HTTP_REFERER'] !== "$CFG->wwwroot/$CFG->admin/purgecaches.php") {
        $return = $_SERVER['HTTP_REFERER'];
    }
}

if ($confirm) {
    require_sesskey();
    purge_all_caches();
    redirect($return, get_string('purgecachesfinished', 'admin'));
} else {
    echo $OUTPUT->header();
    echo $OUTPUT->heading(get_string('purgecaches', 'admin'));

    $url = new moodle_url('/admin/purgecaches.php', array('sesskey'=>sesskey(), 'confirm'=>1));
    echo $OUTPUT->confirm(get_string('purgecachesconfirm', 'admin'), $url, $return);

    echo $OUTPUT->footer();
}