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<?php
# This file is part of BBClone (The PHP web counter on steroids)
# $Header: /cvs/bbclone/lib/timecalc.php,v 1.11 2005/02/14 03:12:52 olliver Exp $
# Copyright (C) 2001-2005, the BBClone Team (see file doc/authors.txt
# distributed with this library)
# This program 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 2 of the License, or
# (at your option) any later version.
# See doc/copying.txt for details
# FIXME: One common class instead of two functions
function bbc_time_offset() {
global $BBC_TIMESTAMP, $BBC_TIME_OFFSET, $access, $last;
$cfg_offset = !empty($BBC_TIME_OFFSET) ? $BBC_TIME_OFFSET : 0;
$sav_offset = isset($access['time']['offset']) ? $access['time']['offset'] : 0;
$diff_offset = $cfg_offset - $sav_offset;
if (empty($diff_offset)) return;
$diff_hours = -round($diff_offset / 60);
$new_time = $BBC_TIMESTAMP + ($cfg_offset * 60);
$old_time = $BBC_TIMESTAMP + ($sav_offset * 60);
$access['time']['last'] += $diff_offset * 60;
$access['time']['offset'] = $cfg_offset;
# Shift the last reset marker as well if available
if (!empty($access['time']['reset'])) $access['time']['reset'] += $diff_offset * 60;
# shifting the detailed stats
for ($i = 0, $max = count($last['traffic']); $i < $max; $i++) $last['traffic'][$i]['time'] += $diff_offset * 60;
$last_day_in_month = $access['time']['day'][(count($access['time']['day']) - 1)];
$today = date("w", $new_time);
$yesterday = empty($today) ? ($today + 6) : ($today - 1);
$days_diff = ($today != date("w", $old_time)) ? 1 : 0;
$this_day = date("j", $new_time) - 1;
$last_day = empty($this_day) ? $last_day_in_month : ($this_day - 1);
$this_month = date("n", $new_time) - 1;
$last_month = empty($this_month) ? ($this_month + 11) : ($this_month - 1);
# shifting hourly stats to get the amount "this day - previous day" we need to modify
$shift = array_splice($access['time']['hour'], $diff_hours, 24);
$diff = ($diff_hours < 0) ? array_sum($shift) : array_sum($access['time']['hour']);
$access['time']['hour'] = array_merge($shift, $access['time']['hour']);
for ($i = 0, $hits = 0, $max = date("G", $new_time); $i <= $max; $i++) $hits += $access['time']['hour'][$i];
for ($i = ($max + 1), $rest = 0; $i < 24; $i++) $rest += $access['time']['hour'][$i];
if ($diff_hours < 0) {
#set time forth
$access['time']['wday'][$today] = $hits;
$access['time']['day'][$this_day] = $hits;
$access['time']['wday'][$yesterday] -= ($access['time']['wday'][$yesterday] < $diff) ? $hits : $diff;
$access['time']['day'][$last_day] -= ($access['time']['day'][$last_day] < $diff) ? $hits : $diff;
if ($access['time']['day'][$this_day] == $last_day_in_month) {
$access['time']['month'][$this_month] = $hits;
$access['time']['month'][$last_month] -= ($access['time']['month'][$last_month] < $diff) ? $hits : $diff;
}
}
else {
# set time back
$access['time']['wday'][$yesterday] += $days_diff ? $rest : $diff;
$access['time']['day'][$last_day] += $days_diff ? $rest : $diff;
$access['time']['wday'][$today] = $hits;
$access['time']['day'][$this_day] = $hits;
if ($access['time']['day'][$this_day] == $access['time']['day'][0]) {
$access['time']['month'][$last_month] += $days_diff ? $rest : $diff;
$access['time']['month'][$this_month] = $hits;
}
}
}
# Update the time stats in $access['time']
function bbc_update_time_stat($new_time, $last_time) {
global $access;
# Independent variables
static $nb_seconds_in_day = 86400;
static $nb_seconds_in_week = 604800;
# Variables for the new time
$new_hour = date("G", $new_time);
$new_wday = date("w", $new_time);
$new_day = date("j", $new_time) - 1;
$new_month = date("n", $new_time) - 1;
# Variables for the last time
$last_hour = date("G", $last_time);
$last_wday = date("w", $last_time);
$last_day = date("j", $last_time) - 1;
$last_month = date("n", $last_time) - 1;
$last_lgmonth = date("t", $last_time);
$nb_seconds_in_last_month = $last_lgmonth * $nb_seconds_in_day;
$nb_seconds_in_last_year = (date("L", $last_time) ? 366 : 365) * $nb_seconds_in_day;
# Updating the last connection time to the new one
# for the next call of bbc_update_time_stat
$access['time']['last'] = $new_time;
# Updating the hourly time stats (in a day)
# Setting to zero the time-counters present between the last connections
# and the new one, and incrementing the new time-counter
# Last day, there are 24 hours = 86400 seconds
if (($new_time - $last_time) > $nb_seconds_in_day) {
for ($k = 0; $k < 24; $k++) $access['time']['hour'][$k] = 0;
}
else {
$elapsed = $new_hour - $last_hour;
$elapsed = ($elapsed < 0) ? $elapsed + 24 : $elapsed;
for ($k = 1; $k <= $elapsed; $k++) $access['time']['hour'][($last_hour + $k) % 24] = 0;
}
$access['time']['hour'][$new_hour]++;
# Updating the daily time stats (in a week)
# Last week, there are 7 days = 604800 seconds
if (($new_time - $last_time) > $nb_seconds_in_week) {
for ($k = 0; $k < 7; $k++) $access['time']['wday'][$k] = 0;
}
else {
$elapsed = $new_wday - $last_wday;
$elapsed = ($elapsed < 0) ? $elapsed + 7 : $elapsed;
for ($k = 1; $k <= $elapsed; $k++) $access['time']['wday'][($last_wday + $k) % 7] = 0;
}
$access['time']['wday'][$new_wday]++;
# Updating the daily time stats (in a month)
# Last month, there are 28, 29, 30 or 31 days
# Note: we have to reset 31 days even if we are a month with less days
if (($new_time - $last_time) > $nb_seconds_in_last_month) {
for ($k = 0; $k < 31; $k++) $access['time']['day'][$k] = 0;
}
else {
$elapsed = $new_day - $last_day;
$elapsed = ($elapsed < 0) ? $elapsed + $last_lgmonth : $elapsed;
for ($k = 1; $k <= $elapsed; $k++) $access['time']['day'][($last_day + $k) % $last_lgmonth] = 0;
}
$access['time']['day'][$new_day]++;
# Updating the monthly time stats (in a year)
# Last year, there are 12 months
if (($new_time - $last_time) > $nb_seconds_in_last_year) {
for ($k = 0; $k < 12; $k++) $access['time']['month'][$k] = 0;
}
else {
$elapsed = $new_month - $last_month;
$elapsed = ($elapsed < 0) ? $elapsed + 12 : $elapsed;
for ($k = 1; $k <= $elapsed; $k++) $access['time']['month'][($last_month + $k) % 12] = 0;
}
$access['time']['month'][$new_month]++;
}
?>
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