我需要使用WooCommerce为产品列表页面上的图像添加包装器元素。

我正在尝试使用via函数。php是一个改变的钩子，但我不知道如何解决它

remove_action( \'woocommerce_before_shop_loop_item_title\', \'woocommerce_template_loop_product_thumbnail\', 10);
add_action( \'woocommerce_before_shop_loop_item_title\', \'woocommerce_template_loop_product_thumbnail\', 10);


if ( ! function_exists( \'woocommerce_template_loop_product_thumbnail\' ) ) {
    function woocommerce_template_loop_product_thumbnail() {
        echo wc_placeholder_img();
    }
}


    function wc_placeholder_img( $size = \'woocommerce_thumbnail\', $attr = \'\' ) {
        $dimensions        = wc_get_image_size( $size );
        $placeholder_image = get_option( \'woocommerce_placeholder_image\', 0 );
    
        $default_attr = array(
            \'class\' => \'woocommerce-placeholder wp-post-image\',
            \'alt\'   => __( \'Placeholder\', \'woocommerce\' ),
        );
    
        $attr = wp_parse_args( $attr, $default_attr );
    
        if ( wp_attachment_is_image( $placeholder_image ) ) {
            $image_html = wp_get_attachment_image(
                $placeholder_image,
                $size,
                false,
                $attr
            );
        } else {
            $image      = wc_placeholder_img_src( $size );
            $hwstring   = image_hwstring( $dimensions[\'width\'], $dimensions[\'height\'] );
            $attributes = array();
    
            foreach ( $attr as $name => $value ) {
                $attribute[] = esc_attr( $name ) . \'="\' . esc_attr( $value ) . \'"\';
            }
    
            $image_html = \'<div class="wc-img-wrapper"><img src="\' . esc_url( $image ) . \'" \' . $hwstring . implode( \' \', $attribute ) . \'/></div>\';
        }
    
        return apply_filters( \'woocommerce_placeholder_img\', $image_html, $size, $dimensions );
    }