index.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/>.

/**
 * An example of a stand-alone Moodle script.
 *
 * Says Hello, {username}, or Hello {name} if the name is given in the URL.
 *
 * @package   local_greet
 * @copyright 2014 Tim Hunt
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(dirname(__FILE__) . '/../../config.php');        // 1

require_login();                                              // 2
$context = context_system::instance();                        // 3
require_capability('local/greet:begreeted', $context);        // 4

$name = optional_param('name', '', PARAM_TEXT);               // 5
if (!$name) {
    $name = fullname($USER);                                  // 6
}

add_to_log(SITEID, 'local_greet', 'begreeted',
        'local/greet/index.php?name=' . urlencode($name));    // 7

$PAGE->set_context($context);                                 // 8
$PAGE->set_url(new moodle_url('/local/greet/index.php'),
        array('name' => $name));                              // 9
$PAGE->set_title(get_string('welcome', 'local_greet'));       // 10

echo $OUTPUT->header();                                       // 11
echo $OUTPUT->box(get_string('greet', 'local_greet',
        format_string($name)));                               // 12
echo $OUTPUT->footer();                                       // 13