Remove unnecessary product meta data from product table using WooCommerce PDF Invoices, Packing Slips, Delivery Notes and Shipping Labels by WebToffee

functions.php

add_filter('wf_pklist_modify_meta_data', 'webtoffee_modify_meta_data', 10, 2);

function webtoffee_modify_meta_data($meta) {

    // Below are the keys for bundled products and composite products - Change the array keys according to the needs

    $keys = array(
        '_bundle_group_mode',
        '_bundle_cart_key',
        '_bundle_weight',
        '_bundled_by',
        '_bundled_item_id',
        '_bundled_item_priced_individually',
        '_bundled_item_needs_shipping',
        '_per_product_pricing',
        '_per_product_shipping',
        '_composite_cart_key',
        '_bundled_shipping',
        '_bundled_weight',
        '_wc_cog_item_cost',
        '_wc_cog_item_total_cost',
        '_composite_parent',
        '_composite_item',
        '_composite_weight',
        '_composite_item_needs_shipping',
        '_component_priced_individually',
        '_component_subtotal_hidden',
        '_reduced_stock'
    );

    foreach ($meta as $id => $value) {

        if (in_array($id, $keys) && $id !== 0) {

            if (isset($meta[$id])) {
                unset($meta[$id]);
            }
        } else {
            $meta[$id] = $value . '<br />';
        }
    }

    return $meta;
}