[WooCommerce breadcrumb add shop link] #WooCommerce

breadcrumb.php

<?php
/**
 * Shop breadcrumb
 *
 * @author      WooThemes
 * @package     WooCommerce/Templates
 * @version     2.3.0
 * @see         woocommerce_breadcrumb()
 */

// change /theme_name/woocommerce/global/breadcrumb.php

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

if ( $breadcrumb ) {

    // add shop home url to breadcrumbs
    if( is_product_category() || is_product_tag() || is_product() ) {
        $shop_page_id = wc_get_page_id( 'shop' );
        $shop_home_arr = array( get_the_title($shop_page_id), get_permalink($shop_page_id));

        // insert to breadcrumbs array on second position
        array_splice($breadcrumb, 1, 0, array($shop_home_arr));
    }

    echo $wrap_before;

    foreach ( $breadcrumb as $key => $crumb ) {

        echo $before;

        if ( ! empty( $crumb[1] ) && sizeof( $breadcrumb ) !== $key + 1 ) {
            echo '<a href="' . esc_url( $crumb[1] ) . '">' . esc_html( $crumb[0] ) . '</a>';
        } else {
            echo esc_html( $crumb[0] );
        }

        echo $after;

        // if ( sizeof( $breadcrumb ) !== $key + 1 ) {
        //     echo $delimiter;
        // }
    }
    echo $wrap_after;
}