<?
function datefrom($month, $day, $year, $days=1) {
    $newtime = mktime(0,0,0,$month, $day+$days, $year);
    
    $returndate[year] = date("Y", $newtime);
    $returndate[month] = date("m", $newtime);
    $returndate[day] = date("d", $newtime);

    return $returndate;
}



// today's date
$today_year = date("Y");
$today_month = date("m");
$today_day = date("d");

$tomorrowdate = datefrom($today_month, $today_day, $today_year, 1);
echo "Today is $today_year / $today_month / $today_day and tomorrow is ".$tomorrowdate[year]." / ".$tomorrowdate[month]." / ".$tomorrowdate[day]." <br /><br /> ";

$yesterdaydate = datefrom($today_month, $today_day, $today_year, -1);
echo "Today is $today_year / $today_month / $today_day and yesterday is ".$yesterdaydate[year]." / ".$yesterdaydate[month]." / ".$yesterdaydate[day]." <br /><br /> ";


// a specific date
$year = 2004;
$month = 3;
$day = 1;


$tomorrowdate = datefrom($month, $day, $year, 2);
echo "The date is $year / $month / $day and $days days after it is ".$tomorrowdate[year]." / ".$tomorrowdate[month]." / ".$tomorrowdate[day]." <br /><br /> ";

$yesterdaydate = datefrom($month, $day, $year, -1);
echo "The date is $year / $month / $day and one day before it is ".$yesterdaydate[year]." / ".$yesterdaydate[month]." / ".$yesterdaydate[day]." <br /><br /> ";
?>