Date.php

   1 <?php
   2 /*=====================================================================*\
   3 || ###################################################################
   4 || # Blue Static ISSO Framework
   5 || # Copyright (c)2005-2009 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 - 2009, 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 $offset = 0;
  52
  53         /**
  54          * Sets the user time zone and then calculates the total offset
  55          *
  56          * @param       float   User time zone
  57          */
  58         public function setUserTimeZone($usertz)
  59         {
  60                 $this->offset = $usertz * 3600;
  61         }
  62
  63         /**
  64          * Formats a UNIX timestamp to a certain date format in the proper time
  65          * zone
  66          *
  67          * @param       string  Format of the date (same as PHP's date() function)
  68          * @param       integer UNIX timestamp to format
  69          * @param       bool    Adjust the date to the user's language?
  70          *
  71          * @return      string  Formatted date
  72          */
  73         public function format($format, $timestamp = TIMENOW, $adjust = true)
  74         {
  75                 if ($adjust)
  76                 {
  77                         $timestamp += $this->offset;
  78                 }
  79                 return gmdate($format, $timestamp);
  80         }
  81
  82         /**
  83          * Fetches an array of timezone names indexed by their offset
  84          *
  85          * @return      array   List of timezones
  86          */
  87         public static function fetch_timezone_list()
  88         {
  89                 $opt = array();
  90
  91                 $opt['-12']             = _('(GMT - 12:00) Enitwetok, Kwajalien');
  92                 $opt['-11']             = _('(GMT - 11:00) Midway Island, Samoa');
  93                 $opt['-10']             = _('(GMT - 10:00) Hawaii');
  94                 $opt['-9']              = _('(GMT - 9:00) Alaska');
  95                 $opt['-8']              = _('(GMT - 8:00) Pacific Time (US &amp; Canada)');
  96                 $opt['-7']              = _('(GMT - 7:00) Mountain Time (US &amp; Canada)');
  97                 $opt['-6']              = _('(GMT - 6:00) Central Time (US &amp; Canada)');
  98                 $opt['-5']              = _('(GMT - 5:00) Eastern Time (US &amp; Canada)');
  99                 $opt['-4']              = _('(GMT - 4:00) Atlantic Time (Canada)');
 100                 $opt['-3.5']    = _('(GMT - 3:30) Newfoundland');
 101                 $opt['-3']              = _('(GMT - 3:00)  Brazil, Buenos Aires, Georgetown');
 102                 $opt['-2']              = _('(GMT - 2:00) Mid-Atlantic, St. Helena');
 103                 $opt['-1']              = _('(GMT - 1:00) Azores, Cape Verde Islands');
 104                 $opt['0']               = _('(GMT) London, Dublin, Casablanca');
 105                 $opt['1']               = _('(GMT + 1:00) Berlin, Madrid, Paris');
 106                 $opt['2']               = _('(GMT + 2:00) Kaliningrad, South Africa, Warsaws');
 107                 $opt['3']               = _('(GMT + 3:00) Baghdad, Moscow, Nairobi');
 108                 $opt['3.5']             = _('(GMT + 3:30) Tehran');
 109                 $opt['4']               = _('(GMT + 4:00) Abu Dhabi, Tbilisi, Muscat');
 110                 $opt['4.5']             = _('(GMT + 4:30) Kabul');
 111                 $opt['5']               = _('(GMT + 5:00) Ekaterinburg, Islamabad, Tashkent');
 112                 $opt['5.5']             = _('(GMT + 5:30) Calcutta, Madras, New Delhi');
 113                 $opt['6']               = _('(GMT + 6:00) Almaty, Colomba, Dhakra');
 114                 $opt['7']               = _('(GMT + 7:00) Bangkok, Hanoi, Jakarta');
 115                 $opt['8']               = _('(GMT + 8:00) Beijing, Hong Kong, Singapore');
 116                 $opt['9']               = _('(GMT + 9:00) Seoul, Tokyo, Yakutsk');
 117                 $opt['9.5']             = _('(GMT + 9:30) Adelaide, Darwin');
 118                 $opt['10']              = _('(GMT + 10:00) Guam, Papua New Guinea, Sydney');
 119                 $opt['11']              = _('(GMT + 11:00) Magadan, New Caledonia, Solomon Islands');
 120                 $opt['12']              = _('(GMT + 12:00) Auckland, Wellington, Fiji');
 121
 122                 return $opt;
 123         }
 124 }
 125
 126 ?>