application/helpers/date.php

   1 <?php defined('SYSPATH') or die('No direct access allowed.');
   2 /**
   3  * Help with formatting datestamps
   4  */
   5 class date {
   6
   7         private static function _nice_format_duration($start_time, $end_time) {
   8                 $duration = $end_time - $start_time;
   9                 $days = $duration / 86400;
  10                 $hours = ($duration % 86400) / 3600;
  11                 $minutes = ($duration % 3600) / 60;
  12                 $seconds = ($duration % 60);
  13                 return sprintf("%s: %dd %dh %dm %ds", _("Duration"),
  14                            $days, $hours, $minutes, $seconds);
  15         }
  16
  17         /**
  18          * Outputs a nicely formatted version of "2003-03-12 21:14:34 to 2003-03-12 21:14:35<br>
  19          * Duration: 0d 0h 0m 1s"
  20          *
  21          * @param $start_time int timestamp
  22          * @param $end_time int timestamp
  23          */
  24         public static function duration($start_time, $end_time)
  25         {
  26                 $fmt = "Y-m-d H:i:s";
  27                 $duration = date($fmt, $start_time) . " to " .
  28                         date($fmt, $end_time) . "<br />\n";
  29
  30                 $duration .= self::_nice_format_duration($start_time, $end_time)."\n";
  31                 return $duration;
  32         }
  33
  34         /**
  35          * Return array of abbrivated weekday names
  36          * NOTE: Are you Really Sure you need this?
  37          */
  38         static function abbr_day_names()
  39         {
  40                 return array(
  41                         _('Sun'),
  42                         _('Mon'),
  43                         _('Tue'),
  44                         _('Wed'),
  45                         _('Thu'),
  46                         _('Fri'),
  47                         _('Sat')
  48                 );
  49         }
  50
  51         /**
  52          * Return array of abbrivated month names
  53          * NOTE: Are you Really Sure you need this?
  54          */
  55         static function abbr_month_names()
  56         {
  57                 return array(
  58                         _('Jan'),
  59                         _('Feb'),
  60                         _('Mar'),
  61                         _('Apr'),
  62                         _('May'),
  63                         _('Jun'),
  64                         _('Jul'),
  65                         _('Aug'),
  66                         _('Sep'),
  67                         _('Oct'),
  68                         _('Nov'),
  69                         _('Dec')
  70                 );
  71         }
  72
  73         /**
  74          * Return array of full weekday names
  75          * NOTE: Are you Really Sure you need this?
  76          */
  77         static function day_names()
  78         {
  79                 return array(
  80                         _('Sunday'),
  81                         _('Monday'),
  82                         _('Tuesday'),
  83                         _('Wednesday'),
  84                         _('Thursday'),
  85                         _('Friday'),
  86                         _('Saturday')
  87                 );
  88         }
  89
  90         /**
  91          * Return array of full month names
  92          * NOTE: Are you Really Sure you need this?
  93          */
  94         static function month_names()
  95         {
  96                 return array(
  97                         _('January'),
  98                         _('February'),
  99                         _('March'),
 100                         _('April'),
 101                         _('May'),
 102                         _('June'),
 103                         _('July'),
 104                         _('August'),
 105                         _('September'),
 106                         _('October'),
 107                         _('November'),
 108                         _('December')
 109                 );
 110         }
 111
 112         /**
 113          * Offset from UTC
 114          *
 115          * @param $timezone string = null, defaults to php.ini's value
 116          * @return int seconds
 117          */
 118         static function utc_offset($timezone = null) {
 119                 if(!$timezone) {
 120                         $timezone = date_default_timezone_get();
 121                 }
 122                 if($timezone == 'UTC') {
 123                         return 0;
 124                 }
 125                 $utc = new DateTimeZone('UTC');
 126                 $remote_dtz = new DateTimeZone($timezone);
 127
 128                 $origin_dt = new DateTime("now", $utc);
 129                 $remote_dt = new DateTime("now", $remote_dtz);
 130
 131                 return $remote_dtz->getOffset($remote_dt);
 132         }
 133 }