get_word_audio.php

<?php
/**
 * ************************************************************************
 * *                           Speech Coach                              **
 * ************************************************************************
 * @package     mod                                                      **
 * @subpackage  Speech Coach                                             **
 * @name        Speech Coach                                             **
 * @copyright   oohoo.biz                                                **
 * @link        http://oohoo.biz                                         **
 * @author      Andrew McCann                                            **
 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later **
 * ************************************************************************
 * ************************************************************************ */

/**
 * This page redirects the user to a link of the audio file that has the given
 * word_id.
 */
require_once(dirname(dirname(dirname(__FILE__))) . '/config.php');
require_once(dirname(__FILE__) . '/lib.php');

$id = optional_param('id', 0, PARAM_INT); // course_module ID, or
$n = optional_param('n', 0, PARAM_INT);  // speechcoach instance ID - it should be named as the first character of the module

if ($id) {
    $cm = get_coursemodule_from_id('speechcoach', $id, 0, false, MUST_EXIST);
    $course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
    $speechcoach = $DB->get_record('speechcoach', array('id' => $cm->instance), '*', MUST_EXIST);
} elseif ($n) {
    $speechcoach = $DB->get_record('speechcoach', array('id' => $n), '*', MUST_EXIST);
    $course = $DB->get_record('course', array('id' => $speechcoach->course), '*', MUST_EXIST);
    $cm = get_coursemodule_from_instance('speechcoach', $speechcoach->id, $course->id, false, MUST_EXIST);
} else {
    error('You must specify a course_module ID or an instance ID');
}

require_login($course, true, $cm);

$word_id = required_param('word_id', PARAM_INT);
$word = $DB->get_record('speechcoach_words', array('id' => $word_id));

$fs = get_file_storage();
$file = $fs->get_file_by_id($word->file_id);
$file_address = $CFG->wwwroot . '/pluginfile.php/' . $file->get_contextid()
        . '/' . $file->get_component() . '/' . $file->get_filearea()
        . '/' . $file->get_filepath() . $file->get_itemid()
        . '/' . $file->get_filename();

header('location: ' . $file_address);
?>