PHP Date Time: Checking Leap Years

PHP Date Time Tips - Part 6: Do you want to check if a particular year is a leap year? You can divide the year with 4 or 400. Like this:

<?php
function isLeapYear($year){
  $result = (($year%400 == 0) || ($year%4 == 0 && $year%100 != 0)) ? true : false;
  return $result;
}

echo "2004 is ";
echo isLeapYear(2004) ? "a leap year" : "not leap year";
?>

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