
<?php

$year = $_REQUEST[ 'year' ] ;

if (($year > "1752") & ($year < "2200")) {
  $y = $year; 
  $a = $y % 19;
  $b = intval($y / 100);
  $c = $y % 100;
  $d = intval($b / 4);
  $e = $b % 4;
  $f = intval(($b + 8) / 25);
  $g = intval(($b - $f + 1) / 3);
  $h = (19 * $a + $b - $d - $g + 15) % 30;
  $i = intval($c / 4);
  $k = $c % 4;
  $l = (32 + 2 * $e + 2 * $i - $h - $k) % 7;
  $m = intval(($a + 11 * $h + 22 * $l) / 451);
  $mn = intval(($h + $l - 7 * $m + 114) / 31);
  $p = ($h + $l - 7 * $m + 114) % 31;
  $da = $p + 1;
  
  $datetoday=date('Ym');  
  $dateeaster=$year."0".$mn;
  if ($dateeaster < $datetoday) {
      echo ("Easter fell on ".$mn."/".$da."/".$year);
  }
  else {
  if ($dateeaster > $datetoday) {
       echo ("Easter will fall on ".$mn."/".$da."/".$year);
  }
  else echo ("Easter falls on ".$mn."/".$da."/".$year." this year.");
  }

 }
else{
if (($year > 0) & ($year < "1753")){
echo("Requested year is ".$year.". ");
echo("The Gregorian calendar was implemented in the American Colonies in 1752. ");
echo("Easter date calculations prior to 1753 will not be attempted."); 
}
else{
echo("This Easter date calculation is not guaranteed to yield the date Christian churches have selected for Easter.");
}}

?>