Chip 2004 April/CMCD0404.ISO/Software/Freeware/Programare/groupoffice-com-2.01/classes/holidays.class.inc

Text File | 2004-03-08 | 6KB | 255 lines

<?php
/*
Copyright Intermesh 2003
Author: Georg Lorenz <[e-mail]>
Version: 1.0 Release date: 08 July 2003

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.
*/

class holidays extends db
{
    var $region;
    var $holidays;

    function holidays($GO_LANGUAGE, $region)
    {
        $this->db();

        require($GO_LANGUAGE->language_path.'holidays.inc');

        //if $region contains $HTTP_ACCEPT_LANGUAGE then try to extract the first region element
        $region = explode(",", $region);
        $search = strstr($region["0"], ";");
        $this->region = str_replace($search, "", $region["0"]);

        $this->holidays = array();
        if(is_array($input_holidays))
        {
            foreach($input_holidays as $key => $sub_array)
            {
                if(array_key_exists($this->region, $sub_array))
                {
                    if($sub_array[$this->region])
                    {
                        $this->holidays[$key] = $sub_array[$this->region];
                    }
                }
            }
        }
    }

    function add_holiday($date, $name)
    {
        $holiday_id = $this->nextid("scHolidays");
        if ($holiday_id > 0)
        {
            $name = addslashes($name);
            $sql = "INSERT INTO scHolidays (id, region, date, name) VALUES ('$holiday_id', '$this->region', '$date', '$name')";
               $this->query($sql);
            if ($this->affected_rows() > 0)
            {
                return true;
            }
            else
            {
                return false;
            }
        }else
        {
            return false;
        }
    }

    function add_holidays($year="")
    {
        $holidays = $this->generate_holidays($year);

        if(is_array($holidays))
        {
            foreach($holidays as $date => $name)
            {
                if($this->get_holiday_by_date($date))
                {
                    if($this->delete_holiday($this->f('id')))
                    {
                        if(!$this->add_holiday($date, $name))
                            return false;
                    }
                }else
                {
                if(!$this->add_holiday($date, $name))
                        return false;
                }
            }
        }else
        {
            return false;
        }
        return true;
    }

    function update_holiday($holiday_id, $date, $name)
    {
        $sql = "UPDATE scHolidays SET region='$this->region', date='$date', name='$name'";
        $sql .= " WHERE id='$holiday_id'";
        return ($this->query($sql));
    }

    function delete_holiday($holiday_id)
    {
        $sql = "DELETE FROM scHolidays WHERE id='$holiday_id'";
        $this->query($sql);
        if ($this->affected_rows() > 0)
            return true;
        else
            return false;
    }

    function delete_holidays($year="")
    {
        $sql = "DELETE FROM scHolidays WHERE region='$this->region'";

        if(!empty($year))
        {
            $date_from = mktime(0,0,0,12,31,$year-1);
            $date_to = mktime(0,0,0,1,1,$year+1);
            $sql .= " AND date>'$date_from' AND date<'$date_to'";
        }

        $this->query($sql);
        if ($this->affected_rows() > 0)
            return true;
        else
            return false;
    }

    function get_holiday($holiday_id)
    {
        $sql = "SELECT * FROM scHolidays WHERE id='$holiday_id'";
        $this->query($sql);
        if ($this->next_record())
            return $this->Record;
        else
            return false;
    }

    function get_holiday_by_date($holiday_date)
    {
        $sql = "SELECT * FROM scHolidays WHERE date='$holiday_date' AND region='$this->region'";
        $this->query($sql);
        if ($this->next_record())
            return true;
        else
            return false;
    }

    function get_holidays($year="")
    {
        $sql = "SELECT * FROM scHolidays WHERE region='$this->region'";

        if(!empty($year))
        {
            $date_from = mktime(0,0,0,12,31,$year-1);
            $date_to = mktime(0,0,0,1,1,$year+1);
            $sql .= " AND date>'$date_from' AND date<'$date_to'";
        }
        $sql .= " ORDER BY date ASC";

        $this->query($sql);
        return $this->num_rows();
    }

    function generate_holidays($year="")
    {
        if(empty($year))
        {
            $current_date = getdate();
            $year = $current_date["year"];
        }

            $holidays = array();
        if(isset($this->holidays['fix']))
        {
                foreach($this->holidays['fix'] as $key => $value)
                {
                $month_day = explode("-", $key);
                $date = mktime(0,0,0,$month_day[0],$month_day[1],$year);
                $holidays[$date] = $value;
                }
            }

        if(isset($this->holidays['var']))
        {
                $easter_day = $this->get_easter_day($year);
                foreach($this->holidays['var'] as $key => $value)
                {
                    $date = strtotime($key." days", $easter_day);
                $holidays[$date] = $value;
                }
            }

        if(isset($this->holidays['spc']))
        {
                $weekday = $this->get_weekday("24","12",$year);
                foreach($this->holidays['spc'] as $key => $value)
                {
                $count = $key - $weekday;
                    $date = strtotime($count." days", mktime(0,0,0,"12","24",$year));
                $holidays[$date] = $value;
                }
            }

        if(empty($holidays))
        {
            return false;
        }else
        {
                ksort($holidays, SORT_NUMERIC);
                return $holidays;
        }
    }

    function get_easter_day($year)
    {
            if($year < 2100)
            $n = 5;
            else
            $n = 6;

            $a = bcmod($year, 19);
            $b = bcmod($year, 4);
            $c = bcmod($year, 7);
            $d = bcmod((19 * $a + 24), 30);
            $e = bcmod((2 * $b + 4 * $c + 6 * $d + $n), 7);

            if(($d + $e + 22) <= 31)
            {
            $day = $d + $e + 22;
            $month = 3;
            }else
            {
            $day = $d + $e - 9;
            $month = 4;
            }

            if($day == 26 && $month == 4)
            $day = 19;

            if($day == 25 && $month == 4 && $a > 10 && $d == 28)
            $day = 18;

            return mktime(0,0,0,$month,$day,$year);
    }

    function get_weekday($day, $month, $year)
    {
            $date = getdate(mktime(0, 0, 0, $month, $day, $year));
            return $date["wday"];
    }

}