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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/>.

/**
 * Media filter performance test script.
 *
 * For developer test usage only. This can be used to compare performance if
 * there are changes to the system in future.
 *
 * @copyright 2012 The Open University
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @package filter_mediaplugin
 */

require(__DIR__ . '/../../../config.php');
require_once($CFG->dirroot . '/filter/mediaplugin/filter.php');

// Only available to site admins.
require_login();
if (!is_siteadmin()) {
< print_error('nopermissions', 'error', '', 'perftest');
> throw new \moodle_exception('nopermissions', 'error', '', 'perftest');
} // Set up page. $PAGE->set_context(context_system::instance()); $PAGE->set_url(new moodle_url('/filter/mediaplugin/dev/perftest.php')); $PAGE->set_heading($SITE->fullname); print $OUTPUT->header(); // Enable all players. $enabledmediaplugins = \core\plugininfo\media::get_enabled_plugins(); \core\plugininfo\media::set_enabled_plugins('vimeo,youtube,videojs,html5audio,html5video'); // Create plugin. $filterplugin = new filter_mediaplugin(null, array()); // Note: As this is a developer test page, language strings are not used: all // text is English-only. /** * Starts time counter. */ function filter_mediaplugin_perf_start() { global $filter_mediaplugin_starttime; $filter_mediaplugin_starttime = microtime(true); } /** * Ends and displays time counter. * @param string $name Counter name to display */ function filter_mediaplugin_perf_stop($name) { global $filter_mediaplugin_starttime; $time = microtime(true) - $filter_mediaplugin_starttime; echo html_writer::tag('li', $name . ': ' . html_writer::tag('strong', round($time, 2)) . 'ms'); } // 1) Some sample text strings. // Note: These are from a random sample of real forum data. Just in case there // are any privacy concerns I have altered names as may be clear. $samples = array( "<p>Hi,</p>&#13;\n<p>I've got myself 2 Heaney's \"The Burial at Thebes\"</p>", "best mark iv heard so far v v good", "<p>I have a script draft anyone want to look at it?", "<p>Thanks for your input Legolas and Ghimli!</p>", "<p>Just to say that I'm thinking of those of you who are working on TMA02.</p>", "<p><strong>1.</strong> <strong>If someone asks you 'where do you come from?'</strong></p>", "<p>With regards to Aragorn's question 'what would we do different'?</p>&#13;\n", "<p>Just thought I'd drop a line to see how everyone is managing generally?</p>&#13;\n", "<p>Feb '12 - Oct '12  AA100</p>&#13;\n<p>Nov '12 - April '13 - A150</p>&#13;\n", "<p>So where does that leave the bible???</p>", ); // 2) Combine sample text strings into one really big (20KB) string. $length = 0; $bigstring = ''; $index = 0; while ($length < 20 * 1024) { $bigstring .= $samples[$index]; $length += strlen($samples[$index]); $index++; if ($index >= count($samples)) { $index = 0; } } // 3) Make random samples from this. I did the following stats on recent forum // posts: // 0-199 characters approx 30% // 200-1999 approx 60% // 2000-19999 approx 10%. $samplebank = array(); foreach (array(100 => 300, 1000 => 600, 10000 => 100) as $chars => $num) { for ($i = 0; $i < $num; $i++) { $start = rand(0, $length - $chars - 1); $samplebank[] = substr($bigstring, $start, $chars); } } echo html_writer::start_tag('ul'); // First test: filter text that doesn't have any links. filter_mediaplugin_perf_start(); foreach ($samplebank as $sample) { $filterplugin->filter($sample); } filter_mediaplugin_perf_stop('No links'); // Second test: filter text with one link added (that doesn't match). $link = '<a href="http://www.example.org/another/link/">Link</a>'; $linksamples = array(); foreach ($samplebank as $sample) { // Make it the same length but with $link replacing the end part. $linksamples[] = substr($sample, 0, -strlen($link)) . $link; } filter_mediaplugin_perf_start(); foreach ($linksamples as $sample) { $filterplugin->filter($sample); } filter_mediaplugin_perf_stop('One link (no match)'); // Third test: filter text with one link added that does match (mp3). $link = '<a href="http://www.example.org/another/file.mp3">MP3 audio</a>'; $linksamples = array(); foreach ($samplebank as $sample) { // Make it the same length but with $link replacing the end part. $linksamples[] = substr($sample, 0, -strlen($link)) . $link; } filter_mediaplugin_perf_start(); foreach ($linksamples as $sample) { $filterplugin->filter($sample); } filter_mediaplugin_perf_stop('One link (mp3)'); \core\plugininfo\media::set_enabled_plugins($enabledmediaplugins); // End page. echo html_writer::end_tag('ul'); print $OUTPUT->footer();