When I’m theming a site in Drupal, I don’t always use the search block that Drupal provides. Sometimes I like to put a search field in the header, sidebar, or even in the off-canvas menu. This snippet will let you display a search field anywhere you’d like.
<div id="search-form" class="search"> <?php $form = drupal_get_form('search_block_form', TRUE); ?> <?php print render($form); ?> </div>