WordPress at a glance
function is not described

get_product_search_form() WC 1.0

Display product search form.

Will first attempt to locate the product-searchform.php file in either the child or. the parent, then load it. If it doesn't exist, then the default search form. will be displayed.

The default searchform uses html5.

Return

String. Nothing.

Usage

get_product_search_form( $echo );
$echo(true|false)
(default: true).

Code of get_product_search_form() WC 5.3.0

<?php
function get_product_search_form( $echo = true ) {
	global $product_search_form_index;

	ob_start();

	if ( empty( $product_search_form_index ) ) {
		$product_search_form_index = 0;
	}

	do_action( 'pre_get_product_search_form' );

	wc_get_template(
		'product-searchform.php',
		array(
			'index' => $product_search_form_index++,
		)
	);

	$form = apply_filters( 'get_product_search_form', ob_get_clean() );

	if ( ! $echo ) {
		return $form;
	}

	// phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
	echo $form;
}