This code is used for Search order by date this code adds your function.php file in WordPress.
<?php
function my_search_query( $query ) {
// not an admin page and is the main query
if ( !is_admin() && $query->is_main_query() ) {
if ( is_search() ) {
$query->set( 'orderby', 'date' );
}
}
}
add_action( 'pre_get_posts', 'my_search_query' );
?>
