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filter is not described

wp_checkdate filter-hook . WP 3.5.0

Filters whether the given date is valid for the Gregorian calendar.


add_filter( 'wp_checkdate', 'filter_function_name_3380', 10, 2 );
function filter_function_name_3380( $checkdate, $source_date ){
	// filter...

	return $checkdate;
Whether the given date is valid.
Date to check.

Where the hook is called

wp-includes/functions.php 6903
return apply_filters( 'wp_checkdate', checkdate( $month, $day, $year ), $source_date );

Where in WP core the hook is used WordPress

Usage not found.