WordPress rewrite search query string

I recently needed to remove the querystring “?s=mysearch” and found it a little hard as no htaccess rewrite was working. I added the following function in my functions.php and worked perfectly.

function rewrite_search_url() {
	if ( is_search() && ! empty( $_GET['s'] ) ) {
		wp_redirect( home_url( "/search/" ) . urlencode( get_query_var( 's' ) ) );
		exit();
	}	
}
add_action( 'template_redirect', 'rewrite_search_url' );