wp_checkdate( int $month, int $day, int $year, string $source_date )

Test if the supplied date is valid for the Gregorian calendar.

Description Description

See also See also

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Parameters Parameters


(int) (Required) Month number.


(int) (Required) Day number.


(int) (Required) Year number.


(string) (Required) The date to filter.

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Return Return

(bool) True if valid date, false if not valid date.

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Source Source

File: wp-includes/functions.php

function wp_checkdate( $month, $day, $year, $source_date ) {
	 * Filters whether the given date is valid for the Gregorian calendar.
	 * @since 3.5.0
	 * @param bool   $checkdate   Whether the given date is valid.
	 * @param string $source_date Date to check.
	return apply_filters( 'wp_checkdate', checkdate( $month, $day, $year ), $source_date );

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Changelog Changelog

Version Description
3.5.0 Introduced.

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User Contributed Notes User Contributed Notes