WooCommerce - Set default product images

<?php
  // code goes in functions php for your child theme

  // set default product image on product page
  add_filter ('woocommerce_placeholder_img_src', 'my_placeholder');
  function my_placeholder($src) {
    return get_site_url().'/wp-content/uploads/logo.jpg'; // enter your default image
  }

  // set default product image on archive page
  // edit classes to suit your theme if necessary
  // credit: Theme Fusion Community Forum mainly
  add_action( 'woocommerce_before_shop_loop_item', 'before_imageless_product', 9 );
  function before_imageless_product() {
    if( !has_post_thumbnail( get_the_id() ) ){
      remove_action( 'woocommerce_before_shop_loop_item_title', 'woocommerce_template_loop_product_thumbnail', 10 );
      echo '<a href="'.get_permalink(get_the_id()).'" class="product_item_link product_image_link">';
      echo '<div class="no-image"><img src="'.get_site_url().'/wp-content/uploads/logo.jpg" />';
      echo '</a>';
    }
  }
  add_action( 'woocommerce_after_shop_loop_item', 'after_imageless_product', 9 );
  function after_imageless_product() {
    if( !has_post_thumbnail( get_the_id() ) ){
      // next line is needed for 2015 theme, maybe others, but comment out if doubled images appear
      // add_action( 'woocommerce_before_shop_loop_item_title', 'woocommerce_template_loop_product_thumbnail', 10 );
      echo '</div>';
    }
  }