<?php

//=======================================
// TimeDate.inc
//
// InsertTime		([offset [,format]]);
// ShowTime			(times);
// HideTime			(times);
//
// InsertDate		([offset[,format]]);
// ShowDate			(begin[,end]);
// HideDate			(begin[,end]);
//
// InsertCountdown	("mm/dd/yy[@hh[:mm[:ss]]]" [,week[,day[,min[,sec]]]] );
// Countdown		("mm/dd/yy[@hh[:mm[:ss]]]" [,week[,day[,min[,sec]]]] );
//
// InsertDay		([offset [,format]]);
// ShowDay			(days);
// HideDay			(days);
//=======================================

    //-----------------------------------------------------
    // InsertTime()
    // - - - - - -
    // Prints the current time.
    //
    // $offset - Hours difference between the displayed
    //           time and the web server's time.
    // $format - "SHORT" or "LONG".
    //-----------------------------------------------------
    function InsertTime($offset=0, $format="long")
    {
        $kHour = 60*60;
        
        if( strcasecmp($format,"long") == 0 )
            print date("g:i:s A",time()+$offset*$kHour);
        else
            print date("g:i A",time()+$offset*$kHour);
    }
    
    //-----------------------------------------------------
    // ShowTime($times)
    // - - - - - - - -
    // This function will return true if the current time
    // is specifed in the parameters.
    //
    // $times - a string in the format "time1 time2 ..."
    //          where time# is in the format "H[:i[:s]]"
    //
    // Example: ShowTime("08:3") returns true if the time
    //                          is 8:30:00 am - 8:39:59 am
    //-----------------------------------------------------
    function ShowTime( $times )
    {
        if( !is_array($times) )
                 $times = explode(" ",trim($times));
        
        while( $time = each($times) )
        {
            $t = trim($time[value]);
            if( strlen($t) == 1 )
                $t = "0".$t;
            if( strlen($t) > 0 )
              if( strcmp($t,substr(date("G:i:s"),0,strlen($t))) == 0 ||
                  strcmp($t,substr(date("H:i:s"),0,strlen($t))) == 0 )
                return true;
        }
    
        return false;
    }
    
    //-----------------------------------------------------
    // InsertDate()
    // - - - - - -
    // Prints the current date.
    //
    // $offset - Hours difference between the displayed
    //           date and the web server's date.
    // $format - "SHORT" or "LONG".
    //-----------------------------------------------------
    function InsertDate($offset=0, $format="long")
    {
        $kHour = 60*60;
        
        if( strcasecmp($format,"long") == 0 )
            print date("l, F j, Y",time()+$offset*$kHour);
        else
            print date("m/d/y",time()+$offset*$kHour);
    }
    
    //-----------------------------------------------------
    // ShowDate($begin,$end)
    // - - - - - - - -
    // Returns true if the current date and time is after
    //   or including $begin and before $end.
    //
    // Both $begin and $end should be formatted as:
    //   "m/d/y[@H[:i[:s]]]"
    //
    // If $begin equals 0 or "*", the function returns true
    //   if the current date is before $end.
    //
    // If $end equals 0 or "*", the function returns true
    //   if the current date is after $begin.
    //          
    //
    // Example: ShowDate("1/1/00","1/1/01") returns true
    //   during the year 2000.
    //-----------------------------------------------------
    function ShowDate( $begin, $end = 0 )
    {
        if( $end == 0 )
        {
            $list = explode(" ",trim($begin));
            $begin = $list[0];
            $end = $list[sizeof($list)-1];
                
            if( $end == "" )
                $end = 0;
        }
        
        $list = array( "begin", "end" );
        
        while( list($key,$value) = each($list) )
        {
            if( is_string( $$value ) && strcmp($$value,"*") != 0 )
            {
                list($date,$time) = explode("@",$$value);
                list($month,$day,$year) = explode("/",$date);
                list($hour,$min,$sec) = explode(":",$time);
        
                $$value = mktime($hour,$min,$sec,$month,$day,$year<80 ? 2000+$year : $year);
            }
            else if( is_string( $$value ) && strcmp($$value,"*") == 0 )
            $$value = 0;
        }
        
        return( $begin <= time() && ($end == 0 || time() < $end) );
    }
    
    //-----------------------------------------------------
    // HideDate($begin,$end)
    // - - - - - - - -
    // Returns false if the $begin <= current date < $end.
    //
    // See: ShowDate().
    //-----------------------------------------------------
    function HideDate( $begin, $end )
    {
        return !ShowDate($begin,$end);
    }
    
    //-----------------------------------------------------
    // InsertCountdown($dateTime)
    // - - - - - - - -
    // Prints the number of weeks, days, hours, and minutes
    // between the current time() and $dateTime.
    //
    // $dateTime should be formatted as:
    //   "m/d/y[@H[:i[:s]]]"
    //
    // Example: Countdown to Halloween Festivities!
    //          InsertCountdown("10/31/2000@19:30")
    //-----------------------------------------------------
    function InsertCountdown( $dateTime, $sWeek = "Week",
                                         $sDay = "Day",
                                         $sHour = "Hour",
                                         $sMin = "Minute",
                                         $sSec = "" )
    {
        print Countdown( $dateTime, $sWeek, $sDay, $sHour, $sMin, $sSec );
    }
    
    //-----------------------------------------------------
    // Countdown($dateTime)
    // - - - - - - - -
    // Returns a string representing the difference between
    // the current time and the input time.
    //
    // $dateTime should be formatted as:
    //   "m/d/y[@H[:i[:s]]]"
    //
    // Example: Countdown to Halloween Festivities!
    //          InsertCountdown("10/31/2000@19:30") 
    //-----------------------------------------------------
    function Countdown( $dateTime, $sWeek = "Week",
                                   $sDay = "Day",
                                   $sHour = "Hour",
                                   $sMin = "Minute",
                                   $sSec = "" )
    {
        $kSec = 1;
        $kMin = 60*$kSec;
        $kHour = 60*$kMin;
        $kDay = 24*$kHour;
        $kWeek = 7*$kDay;
        
        list($date,$time) = explode("@",$dateTime);
        list($month,$day,$year) = explode("/",$date);
        list($hour,$min,$sec) = explode(":",$time);
        
        $inTime = mktime($hour,$min,$sec,$month,$day,$year<80 ? 2000+$year : $year);
    
        $time_difference = abs(time()-$inTime);
        
        $weeks = ( empty($sWeek) ? 0 : floor($time_difference / $kWeek) ); $time_difference -= $weeks * $kWeek;
        $days  = ( empty($sDay)  ? 0 : floor($time_difference / $kDay)  ); $time_difference -= $days * $kDay;
        $hours = ( empty($sHour) ? 0 : floor($time_difference / $kHour) ); $time_difference -= $hours * $kHour;
        $mins  = ( empty($sMin)  ? 0 : floor($time_difference / $kMin)  ); $time_difference -= $mins * $kMin;
        $secs  = ( empty($sSec)  ? 0 : floor($time_difference / $kSec)  );
                 
        $out  = ( $weeks == 0 ? "" :                         "$weeks $sWeek" . ($weeks>1?"s":"") );
        $out .= ( $days  == 0 ? "" : (empty($out)?"":", ") . "$days $sDay"   . ( $days>1?"s":"") );
        $out .= ( $hours == 0 ? "" : (empty($out)?"":", ") . "$hours $sHour" . ($hours>1?"s":"") );
        $out .= ( $mins  == 0 ? "" : (empty($out)?"":", ") . "$mins $sMin"   . ( $mins>1?"s":"") );
        $out .= ( $secs  == 0 ? "" : (empty($out)?"":", ") . "$secs $sSec"   . ( $secs>1?"s":"") );
    
        print $out;
    }
    
    //-----------------------------------------------------
    // InsertDay()
    // - - - - - -
    // Prints the day of the week.
    //
    // $offset - Hours difference between the displayed
    //           day and the web server's day.
    // $format - "SHORT" or "LONG".
    //-----------------------------------------------------
    function InsertDay($offset=0, $format="long")
    {
        $kHour = 60*60;
        
        if( strcasecmp($format,"long") == 0 )
                print date("l",time()+$offset*$kHour);
        else
                print date("D",time()+$offset*$kHour);
    }
    
    //-----------------------------------------------------
    // ShowDay($days)
    // - - - - - - - -
    // Returns true if today is in the list of days.
    //
    // $days should be formatted:
    //   "day1 day2 day3 ..."
    //
    // i.e.:
    //   "MON TUE WED"
    //-----------------------------------------------------
    function ShowDay( $days )
    {
        if( !is_array($days) )
            $days = explode(" ",$days);
     
        while( $day = each($days) )
        {
            $d = trim($day[value]);
            if( strlen($d) > 0 && stristr(date("l"),$d) )
                return true;
        }
        return false;
    }
    
    //-----------------------------------------------------
    // HideDay($days)
    // - - - - - - - -
    // Returns false if today is in the list of days.
    //
    // $day should be formatted:
    //   "day1 day2 day3 ..."
    //
    // i.e.:
    //   "MON TUE WED"
    //-----------------------------------------------------
    function HideDay( $days )
    {
        return !ShowDay($days);
    }
?>