Filters whether the given date is valid for the Gregorian calendar.
$checkdatebool$source_datestringwp-includes/functions.php:7451wp_checkdate() * * @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, $source_date );} /** * Loads the auth check for monitoring whether the user is still logged in. * * Can be disabled with remove_action( 'admin_enqueue_scripts', 'wp_auth_check_load' );Introduced in 3.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.