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Developer Documentation

See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 4.1.x will end 13 November 2023 (12 months).
  • Bug fixes for security issues in 4.1.x will end 10 November 2025 (36 months).
  • PHP version: minimum PHP 7.4.0 Note: minimum PHP version has increased since Moodle 4.0. PHP 8.0.x is supported too.
<?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);
$returnurl = optional_param('returnurl', '/admin/purgecaches.php', PARAM_LOCALURL);
$returnurl = new moodle_url($returnurl);

admin_externalpage_setup('purgecaches');

$form = new core_admin\form\purge_caches(null, ['returnurl' => $returnurl]);

// If we have got here as a confirmed aciton, do it.
if ($data = $form->get_data()) {

    // Valid request. Purge, and redirect the user back to where they came from.
< $selected = $data->purgeselectedoptions; < purge_caches($selected); <
if (isset($data->all)) {
> purge_caches();
$message = get_string('purgecachesfinished', 'admin'); } else {
> purge_caches($data->purgeselectedoptions);
$message = get_string('purgeselectedcachesfinished', 'admin'); } } else if ($confirm && confirm_sesskey()) { purge_caches(); $message = get_string('purgecachesfinished', 'admin'); }
> // Redirect and/or show notification message confirming cache(s) were purged.
if (isset($message)) {
> if (!$PAGE->url->compare($returnurl, URL_MATCH_BASE)) {
redirect($returnurl, $message);
> } } > > // We are already on the purge caches page, add the notification. // Otherwise, show a form to actually purge the caches. > \core\notification::add($message, \core\output\notification::NOTIFY_INFO);
echo $OUTPUT->header(); echo $OUTPUT->heading(get_string('purgecachespage', 'admin')); echo $OUTPUT->box_start('generalbox', 'notice'); echo html_writer::tag('p', get_string('purgecachesconfirm', 'admin')); echo $form->render(); echo $OUTPUT->box_end(); echo $OUTPUT->footer();