<?php

    require_once('config.php');

    /// Also tested with $USER defined (normal Moodle operation). Works perfectly!
    /// (with this lines commented $CFG->forcetimezone and $CFG->timezone are
    /// used for notz operations in the standard way
    /// global $USER;
    /// $USER = get_record('user', 'username', 'admin');

    $mytz = 'Europe/Madrid'; /// Changeme

    echo "\nExecution details:\n";

    echo "  With tz, calculations are for timezone \"$mytz\" \n";
    echo "  Without tz, calculations are for timezone \"" . get_user_timezone()  . "\"\n";

    $time = time();
    echo "\nNow: (" . $time . ")\n";

    $usergetdate = usergetdate($time);
    echo '  Now (usergetdate-notz): ' . $usergetdate['mday']    . '-' .
                                        $usergetdate['mon']     . '-' .
                                        $usergetdate['year']    . ' ' .
                                        $usergetdate['hours']   . ':' .
                                        $usergetdate['minutes'] . "\n";
    $usergetdate = usergetdate($time, $mytz);
    echo '  Now (usergetdate-withtz): ' . $usergetdate['mday']    . '-' .
                                        $usergetdate['mon']     . '-' .
                                        $usergetdate['year']    . ' ' .
                                        $usergetdate['hours']   . ':' .
                                        $usergetdate['minutes'] . "\n";
    echo '  Now (userdate-notz): ' . userdate($time, '') . "\n";
    echo '  Now (userdate-withtz): ' . userdate($time, '', $mytz) . "\n";
    echo '  Midnight (userdate-notz): ' . userdate(usergetmidnight($time), '') . " (mid: " . usergetmidnight($time) . ")\n";
    echo '  Midnight (userdate-withtz): ' . userdate(usergetmidnight($time, $mytz), '', $mytz) . " (mid: " . usergetmidnight($time, $mytz) . ")\n";

    $time = $time+(7*24*60*60);
    echo "\nIn 7 days (7*24*60*60 seconds): (" . $time . ")\n";

    $usergetdate = usergetdate($time);
    echo '  7 (usergetdate-notz): ' . $usergetdate['mday']    . '-' .
                                        $usergetdate['mon']     . '-' .
                                        $usergetdate['year']    . ' ' .
                                        $usergetdate['hours']   . ':' .
                                        $usergetdate['minutes'] . "\n";
    $usergetdate = usergetdate($time, $mytz);
    echo '  7 (usergetdate-withtz): ' . $usergetdate['mday']    . '-' .
                                        $usergetdate['mon']     . '-' .
                                        $usergetdate['year']    . ' ' .
                                        $usergetdate['hours']   . ':' .
                                        $usergetdate['minutes'] . "\n";
    echo '  7 (userdate-notz): ' . userdate($time, '') . "\n";
    echo '  7 (userdate-withtz): ' . userdate($time, '', $mytz) . "\n";
    echo '  Midnight (userdate-notz): ' . userdate(usergetmidnight($time), '') . " (mid: " . usergetmidnight($time) . ")\n";
    echo '  Midnight (userdate-withtz): ' . userdate(usergetmidnight($time, $mytz), '', $mytz) . " (mid: " . usergetmidnight($time, $mytz) . ")\n";
?>