WordPress Version: 6.1
/**
* Adds `noindex` to the robots meta tag if a search is being performed.
*
* If a search is being performed then noindex will be output to
* tell web robots not to index the page content. Add this to the
* {@see 'wp_robots'} filter.
*
* Typical usage is as a {@see 'wp_robots'} callback:
*
* add_filter( 'wp_robots', 'wp_robots_noindex_search' );
*
* @since 5.7.0
*
* @see wp_robots_no_robots()
*
* @param array $robots Associative array of robots directives.
* @return array Filtered robots directives.
*/
function wp_robots_noindex_search(array $robots)
{
if (is_search()) {
return wp_robots_no_robots($robots);
}
return $robots;
}