HotLunches/include/date-time.php

<?php
// writeLog("date-time.php");


// Date and Time processing functions

//
// mapTimeZone to convert invalid Time Zone entries to valid ones
//
function mapTimeZone($tz) {
   switch ($tz) {
      case 'Canada/Pacific':
         $timezone = "America/Vancouver";
         break;

      case 'Canada/Mountain':
         $timezone = "America/Edmonton";
         break;

      case 'Canada/Central':
         $timezone = "America/Winnipeg";
         break;

      case 'Canada/Eastern':
         $timezone = "America/Toronto";
         break;

      default:
         $timezone = $tz;
         break;
   }

   return($timezone);
}


//
// Get date text
//
function dateString($fmt='',$time=0) {

   global $school_record;
   global $currLanguage;

   // Set the current timezone
   $timezone = mapTimeZone($school_record['timezone']);
   date_default_timezone_set($timezone);

   if ($time == 0) $time = time();

   if (strlen($fmt) == 0) $fmt = 'date';
   if ($fmt == 'datetime') $fmt = 'defaulttime';

   // Get the mapping of the month name
   $monthText = date("F",$time);
   $monthCode = "MONTH-" . strtoupper($monthText);
   $month = getLanguageText($monthCode);

   // Get the mapping of the short month name
   $monText = date("M",$time);
   $monCode = "MONTH-ABBR-" . strtoupper($monthText);
   $mon = getLanguageText($monCode);

   // Get the mapping of the day of the week
   $dowText = date("l",$time);
   $dowCode = "TEXT-" . strtoupper($dowText);
   $dow = getLanguageText($dowCode);

   // Format the date
   switch ($fmt) {
      case 'mon':
         $date_string = $mon;
         break;

      case 'month':
         $date_string = $month;
         break;

      case 'mon-year':
         $date_string = $mon . "-" . date("Y",time);
         break;

      case 'month-year':
         $date_string = $month . "-" . date("Y",time);
         break;

      case 'shortdate':
      case 'shortdatetime':
      case 'shortdate@time':
         if (!array_key_exists('short_date_format',$school_record) || strlen($school_record['short_date_format']) == 0) $dateFormat = "M j";
         else $dateFormat = $school_record['short_date_format'];

         if (strlen($school_record['time_format']) == 0) $timeFormat = "g:ia";
         else $timeFormat = $school_record['time_format'];

         $date_string = date($dateFormat,$time);
         $date_string = str_replace($monthText,$month,$date_string);
         $date_string = str_replace($dowText,$dow,$date_string);

         if ($fmt == 'shortdatetime') $date_string .= " " . date($timeFormat,$time);
         if ($fmt == 'shortdate@time') $date_string .= " @ " . date($timeFormat,$time);
         break;

      default:
      case 'date':
      case 'datetime':
      case 'date@time':
      case 'default':
      case 'defaulttime':
         if (strlen($school_record['date_format']) == 0) $dateFormat = "F j, Y";
         else $dateFormat = $school_record['date_format'];

         if (strlen($school_record['time_format']) == 0) $timeFormat = "g:ia";
         else $timeFormat = $school_record['time_format'];

         $date_string = date($dateFormat,$time);
         $date_string = str_replace($dowText,$dow,$date_string);

         if (strpos($date_string, $monthText) !== false) {
            // writeLog("monthText: $monthText");
            // writeLog("month: $month");
            // writeLog("date_string: $date_string");
            $date_string = str_replace($monthText,$month,$date_string);
         }
         else {
            // writeLog("monText: $monText");
            // writeLog("mon: $mon");
            // writeLog("date_string: $date_string");
            $date_string = str_replace($monText,$mon,$date_string);
         }

         if ($fmt == 'datetime') $date_string .= " " . date($timeFormat,$time);
         if ($fmt == 'defaulttime') $date_string .= " " . date($timeFormat,$time);
         if ($fmt == 'date@time') $date_string .= " @ " . date($timeFormat,$time);
         break;

      case 'date-cal':
         // Get the mapping of the short month name
         $monText = date("F",$time);
         $monCode = "MONTH-ABBR-" . strtoupper($monText);
         $monText = date("M",$time);
         $mon = getLanguageText($monCode);

         // Get the mapping of the day of the week
         $dowText = date("D",$time);
         $dowCode = "TEXT-" . strtoupper($dowText);
         $dow = getLanguageText($dowCode);

         $date_string = date("D M j",$time);
         $date_string = str_replace($monText,$mon,$date_string);
         $date_string = str_replace($dowText,$dow,$date_string);
         break;

      case 'day':
         // Get the mapping of the day of the week
         $dowText = date("D",$time);
         $dowCode = "TEXT-" . strtoupper($dowText);
         $dow = getLanguageText($dowCode);
         $date_string = $dow;
         break;

      case 'time':
         if (strlen($school_record['time_format']) == 0) $timeFormat = "g:ia";
         else $timeFormat = $school_record['time_format'];

         $date_string = date($timeFormat,$time);
         break;
   }

   return($date_string);
}


//
// Get default date time
//
function dateFormat($time=0) {
   return(dateString('datetime',$time));
}


//
// Reformat date field based on a format string
//
function formatDate($date,$date_format) {
   switch($date_format) {
      case 'YYYY-MM-DD':
         return($date);
         break;

      case 'YYYY/MM/DD':
      case 'YY/MM/DD':
         list($yr,$mo,$dy) = explode('/',$date);
         break;

      case 'YY-MM-DD':
         list($yr,$mo,$dy) = explode('-',$date);
         break;

      case 'DD-MM-YYYY':
      case 'DD-MM-YY':
         list($dy,$mo,$yr) = explode('-',$date);
         break;

      case 'DD/MM/YYYY':
      case 'DD/MM/YY':
         list($dy,$mo,$yr) = explode('/',$date);
         break;

      case 'MM-DD-YYYY':
      case 'MM-DD-YY':
         list($mo,$dy,$yr) = explode('-',$date);
         break;

      case 'MM/DD/YYYY':
      case 'MM/DD/YY':
         list($mo,$dy,$yr) = explode('/',$date);
         break;
   }

   if (strlen($yr) == 2) {
      if ($yr <= date("y",time())) $yr = "20$yr";
      else $yr = "19$yr";
   }
   $date = sprintf("%4d-%02d-%02d",$yr,$mo,$dy);

   return($date);
}

?>