[WordPress]未来日時での投稿を無効にする

functions.php

function stop_post_status_future_func( $data, $postarr ) {
	if ( ( $data['post_type'] == 'カスタム投稿' && $data['post_status'] == 'future') && $postarr['post_status'] == 'publish' ) :
		$data['post_status'] = 'publish';
	endif;
	return $data;
};
add_filter( 'wp_insert_post_data', 'stop_post_status_future_func', 10, 2 );