checkdate

(PHP 4, PHP 5, PHP 7, PHP 8)

checkdate — Validate a Gregorian date

Description

checkdate(int $month, int $day, int $year): bool

Checks the validity of the date formed by the arguments. A date is considered valid if each parameter is properly defined.

Parameters

month: The month is between 1 and 12 inclusive.
day: The day is within the allowed number of days for the given month. Leap years are taken into consideration.
year: The year is between 1 and 32767 inclusive.

Return Values

Returns true if the date given is valid; otherwise returns false.

Examples

Example #1 checkdate() example

<?php
var_dump(checkdate(12, 31, 2000));
var_dump(checkdate(2, 29, 2001));
?>

The above example will output:

bool(true)
bool(false)

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User Contributed Notes 1 note

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631

glavic at gmail dot com ¶

10 years ago

With DateTime you can make the shortest date&time validator for all formats.

<?php

function validateDate($date, $format = 'Y-m-d H:i:s')
{
$d = DateTime::createFromFormat($format, $date);
    return $d && $d->format($format) == $date;
}

var_dump(validateDate('2012-02-28 12:12:12')); # true
var_dump(validateDate('2012-02-30 12:12:12')); # false
var_dump(validateDate('2012-02-28', 'Y-m-d')); # true
var_dump(validateDate('28/02/2012', 'd/m/Y')); # true
var_dump(validateDate('30/02/2012', 'd/m/Y')); # false
var_dump(validateDate('14:50', 'H:i')); # true
var_dump(validateDate('14:77', 'H:i')); # false
var_dump(validateDate(14, 'H')); # true
var_dump(validateDate('14', 'H')); # true

var_dump(validateDate('2012-02-28T12:12:12+02:00', 'Y-m-d\TH:i:sP')); # true
# or
var_dump(validateDate('2012-02-28T12:12:12+02:00', DateTime::ATOM)); # true

var_dump(validateDate('Tue, 28 Feb 2012 12:12:12 +0200', 'D, d M Y H:i:s O')); # true
# or
var_dump(validateDate('Tue, 28 Feb 2012 12:12:12 +0200', DateTime::RSS)); # true
var_dump(validateDate('Tue, 27 Feb 2012 12:12:12 +0200', DateTime::RSS)); # false
# ...