Date.php

   1 <?php
   2 /*=====================================================================*\
   3 || ###################################################################
   4 || # Blue Static ISSO Framework
   5 || # Copyright (c)2005-2008 Blue Static
   6 || #
   7 || # This program is free software; you can redistribute it and/or modify
   8 || # it under the terms of the GNU General Public License as published by
   9 || # the Free Software Foundation; version 2 of the License.
  10 || #
  11 || # This program is distributed in the hope that it will be useful, but
  12 || # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13 || # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  14 || # more details.
  15 || #
  16 || # You should have received a copy of the GNU General Public License along
  17 || # with this program; if not, write to the Free Software Foundation, Inc.,
  18 || # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  19 || ###################################################################
  20 \*=====================================================================*/
  21
  22 /**
  23 * Date formatting system (Date.php)
  24 *
  25 * @package      ISSO
  26 */
  27
  28 /**
  29 * Defined constant time
  30 */
  31 define('TIMENOW', time());
  32
  33 /**
  34 * Date Formatting System
  35 *
  36 * This framework wraps date and time functions into one neat little
  37 * package that takes care of modifying timestamps to meet the right
  38 * time zone
  39 *
  40 * @author               Blue Static
  41 * @copyright    Copyright (c)2005 - 2008, Blue Static
  42 * @package              ISSO
  43 *
  44 */
  45 class BSDate
  46 {
  47         /**
  48         * Offset in seconds; this is set using fetch_offset()
  49         * @var  integer
  50         */
  51         private $offset = 0;
  52
  53         // ###################################################################
  54         /**
  55         * Sets the user time zone and then calculates the total offset
  56         *
  57         * @param        float   User time zone
  58         */
  59         public function setUserTimeZone($usertz)
  60         {
  61                 $this->offset = $usertz * 3600;
  62         }
  63
  64         // ###################################################################
  65         /**
  66         * Formats a UNIX timestamp to a certain date format in the proper time
  67         * zone
  68         *
  69         * @param        string  Format of the date (same as PHP's date() function)
  70         * @param        integer UNIX timestamp to format
  71         * @param        bool    Adjust the date to the user's language?
  72         *
  73         * @return       string  Formatted date
  74         */
  75         public function format($format, $timestamp = TIMENOW, $adjust = true)
  76         {
  77                 if ($adjust)
  78                 {
  79                         $timestamp += $this->offset;
  80                 }
  81                 return gmdate($format, $timestamp);
  82         }
  83
  84         // ###################################################################
  85         /**
  86         * Fetches an array of timezone names indexed by their offset
  87         *
  88         * @return       array   List of timezones
  89         */
  90         public static function fetch_timezone_list()
  91         {
  92                 $opt = array();
  93
  94                 $opt['-12']             = _('(GMT - 12:00) Enitwetok, Kwajalien');
  95                 $opt['-11']             = _('(GMT - 11:00) Midway Island, Samoa');
  96                 $opt['-10']             = _('(GMT - 10:00) Hawaii');
  97                 $opt['-9']              = _('(GMT - 9:00) Alaska');
  98                 $opt['-8']              = _('(GMT - 8:00) Pacific Time (US &amp; Canada)');
  99                 $opt['-7']              = _('(GMT - 7:00) Mountain Time (US &amp; Canada)');
 100                 $opt['-6']              = _('(GMT - 6:00) Central Time (US &amp; Canada)');
 101                 $opt['-5']              = _('(GMT - 5:00) Eastern Time (US &amp; Canada)');
 102                 $opt['-4']              = _('(GMT - 4:00) Atlantic Time (Canada)');
 103                 $opt['-3.5']    = _('(GMT - 3:30) Newfoundland');
 104                 $opt['-3']              = _('(GMT - 3:00)  Brazil, Buenos Aires, Georgetown');
 105                 $opt['-2']              = _('(GMT - 2:00) Mid-Atlantic, St. Helena');
 106                 $opt['-1']              = _('(GMT - 1:00) Azores, Cape Verde Islands');
 107                 $opt['0']               = _('(GMT) London, Dublin, Casablanca');
 108                 $opt['1']               = _('(GMT + 1:00) Berlin, Madrid, Paris');
 109                 $opt['2']               = _('(GMT + 2:00) Kaliningrad, South Africa, Warsaws');
 110                 $opt['3']               = _('(GMT + 3:00) Baghdad, Moscow, Nairobi');
 111                 $opt['3.5']             = _('(GMT + 3:30) Tehran');
 112                 $opt['4']               = _('(GMT + 4:00) Abu Dhabi, Tbilisi, Muscat');
 113                 $opt['4.5']             = _('(GMT + 4:30) Kabul');
 114                 $opt['5']               = _('(GMT + 5:00) Ekaterinburg, Islamabad, Tashkent');
 115                 $opt['5.5']             = _('(GMT + 5:30) Calcutta, Madras, New Delhi');
 116                 $opt['6']               = _('(GMT + 6:00) Almaty, Colomba, Dhakra');
 117                 $opt['7']               = _('(GMT + 7:00) Bangkok, Hanoi, Jakarta');
 118                 $opt['8']               = _('(GMT + 8:00) Beijing, Hong Kong, Singapore');
 119                 $opt['9']               = _('(GMT + 9:00) Seoul, Tokyo, Yakutsk');
 120                 $opt['9.5']             = _('(GMT + 9:30) Adelaide, Darwin');
 121                 $opt['10']              = _('(GMT + 10:00) Guam, Papua New Guinea, Sydney');
 122                 $opt['11']              = _('(GMT + 11:00) Magadan, New Caledonia, Solomon Islands');
 123                 $opt['12']              = _('(GMT + 12:00) Auckland, Wellington, Fiji');
 124
 125                 return $opt;
 126         }
 127 }
 128
 129 ?>