PHP checkdate() function

Last Updated : 17 Mar 2025

This function clears the date and year exit or not.

Syntax

Parameters

Parameter	Description
month	The month is between 1 and 12 inclusive.
day	The day is within the allowed number of days for the given month.
year	The year is between 1 and 32767 inclusive.

Return

This function returns TRUE if the date given is valid; otherwise returns FALSE.

Example 1

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

Output:

bool(false) 
bool(false) 
bool(true)

Example 2

<?php
 $month= 2; 
$day= 8; 
$year= 2019; 
var_dump(checkdate($month, $day, $year));
 ?>

Output:

bool(true)

Example 3

<?php

//checkdate()function in case of leap year
 
$month= 2; 
$day= 29; 
$year= 2016; 
 
// applying validation of checkdate()
// leap year 
var_dump(checkdate($month, $day, $year)); 
 $month = 2; 
$day = 29; 
$year = 2019; 
//checkdate()function in case of non-leap year 
var_dump(checkdate($month, $day, $year)); 
 ?>

Output:

bool(true) 
bool(false)

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