mirror of
https://github.com/moodle/moodle.git
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63 lines
2.0 KiB
PHP
63 lines
2.0 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Quiz statistics report cron code.
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*
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* @package quiz
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* @subpackage statistics
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* @copyright 2008 Jamie Pratt
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Quiz statistics report cron code. Deletes cached data more than a certain age.
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*/
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function quiz_report_statistics_cron() {
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global $DB;
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$expiretime = time() - 5*HOURSECS;
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$todelete = $DB->get_records_select_menu('quiz_statistics', 'timemodified < ?',
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array($expiretime), '', 'id, 1');
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if (!$todelete) {
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return true;
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}
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list($todeletesql, $todeleteparams) = $DB->get_in_or_equal(array_keys($todelete));
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if (!$DB->delete_records_select('quiz_question_statistics',
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'quizstatisticsid ' . $todeletesql, $todeleteparams)) {
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mtrace('Error deleting out of date quiz_question_statistics records.');
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}
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if (!$DB->delete_records_select('quiz_question_response_stats',
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'quizstatisticsid ' . $todeletesql, $todeleteparams)) {
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mtrace('Error deleting out of date quiz_question_response_stats records.');
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}
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if (!$DB->delete_records_select('quiz_statistics',
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'id ' . $todeletesql, $todeleteparams)) {
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mtrace('Error deleting out of date quiz_statistics records.');
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}
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return true;
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}
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