PHP checkdate() Function

Check if several dates are valid Gregorian dates:

<?php
var_dump(checkdate(12,31,-400));
echo "<br>";
var_dump(checkdate(2,29,2003));
echo "<br>";
var_dump(checkdate(2,29,2004));
?>

Definition and Usage

The checkdate() function is used to validate a Gregorian date.

checkdate( month, day, year)

Parameter	Description
month	Required. Specifies the month as a number between 1 and 12
day	Required. Specifies the day as a number between 1 and 31
year	Required. Specifies the year as a number between 1 and 32767

Return Value:	TRUE if the date is valid. FALSE otherwise
PHP Version:	4.0+