The filter used for intercepting the default WooCommerce product search form. Assigning a new function to this filter allows the search form to be redesigned to specific requirements
PHP
<?php
function webdav_get_product_search_form () {
// Insert custom code here
$output = ''; // function should return html code in a string
return $output;
}
add_filter ('get_product_search_form', 'webdav_get_product_search_form', 10, 1);
?>