WooCommerce - Products list shortcode

<?php
  // Shortcode to make a list of products from a category
  // usage: [products_list rows="-1" category="kits" orderby="title" order="ASC"]
  // rows defaults to -1, show all products
  // category defaults to '', empty: shows all categories, value: category slug
  // orderby defaults to 'title'
  // order defaults to 'DESC'
  // for orderby options see: https://codex.wordpress.org/Template_Tags/get_posts
  // code goes in functions.php for your child theme

  add_shortcode('products_list', 'products_list');
  function products_list( $atts ) {
    global $post;
    // get the parameters
    $args = shortcode_atts( array(
      'rows'            => -1,
      'category'        => '',
      'tag'             => '',
      'orderby'         => 'title',
      'order'           => 'ASC'
      ), $atts );
    $rows = (int) $args['rows'];
    $category = $args['category'];
    $tag = $args['tag'];
    $orderby = $args['orderby'];
    $order = $args['order'];
    // get the products
    $args = array(
      'posts_per_page'  => $rows,
      'offset'          => 0,
      'post_status'     => 'publish',
      'post_type'       => 'product',
      'product_cat'     => $category,
      'product_tag'     => $tag,
      'orderby'         => $orderby,
      'order'           => $order
    );
    $posts_list = get_posts( $args );
    if ( count( $posts_list ) ) {
      $html = '<table class="products-list">'.PHP_EOL;
      $html .= '<tbody>';
      foreach ( $posts_list as $post ) {
        setup_postdata( $post );
        $html .= '<tr>'.PHP_EOL;
        $img_html = woocommerce_get_product_thumbnail( 'shop_thumbnail' );
        $html.= '<td>'.$img_html.'</td>'.PHP_EOL;
        $my_title = get_the_title();
        $html .= '<td>'.$my_title.'</td>'.PHP_EOL;
        $_product = wc_get_product( $post->ID );
        $price = $_product->get_price_html();
        $html .= '<td>'.$price.'</td>'.PHP_EOL;
        $my_permalink = get_the_permalink();
        $html .= '<td><a href="'.$my_permalink.'" target="_blank" class="button">Details</a></td>'.PHP_EOL;
        $html .= '</tr>'.PHP_EOL;
        wp_reset_postdata();
      }
      $html .= '</tbody>';
      $html .= '</table>'.PHP_EOL;
    } else {
      $html = 'No products found'.PHP_EOL;
    }
    return $html;
  }
?>

/* custom styles for the product_list */
/* may need modifying to suit your theme */
/* Custom css can be entered at: Dashboard > Appearance > Customise > Additional CSS */
/* do not put in functions.php */

.entry-content .products-list tr {
  border-style:solid;
  border-color:#ddd;
  border-width:1px 0
}
.entry-content .products-list td {
  padding:0 16px;
  border:none
}
.entry-content .products-list td img {
  width:40px;
  height:40px;
}
.products-list .button {
  padding:4px 16px;
  border:1px solid #bbb;
  border-radius:6px;
}