nps search form

nps_searchform.php

<?php
function nps_get_taxonomy_search_form( $term = null, $taxonomy = null ) {

	if ( !$term ) {
		$term = get_term_by( 'slug', get_query_var( 'term' ), get_query_var( 'taxonomy' ) );
		$term = $term->name;
	}

	if ( !$taxonomy )
		$taxonomy = get_query_var( 'taxonomy' );

	$form ='
	<form role="search" method="get" class="search-form" action="' . get_home_url( '/' ) . '">
		<label>
			<input type="search" class="search-field" placeholder="Search" value="" name="s" title="Search for:" />
		</label>
		<input type="hidden" name="' . $taxonomy . '" value="' . $term . '" />
	</form>
	';

	echo $form;
}