Daiscon pixel bulk edit

functions.php

<?php

add_action('woocommerce_product_bulk_edit_start', 'daisycon_pixel_cc_field_bulk_edit_input');
function daisycon_pixel_cc_field_bulk_edit_input() {
    ?>
    <div class="inline-edit-group">
        <label class="alignleft">
            <span class="title">
                <?php _e('Daisycon Pixel Commissie Code', 'woocommerce'); ?>
            </span>
            <span class="input-text-wrap">
                <input type="text" name="_daisycon_cc" class="text" value="">
            </span>
        </label>
    </div>
    <?php
}

add_action('woocommerce_product_bulk_edit_save', 'daisycon_pixel_cc_field_bulk_edit_save');
function daisycon_pixel_cc_field_bulk_edit_save($product) {
    $field = $_REQUEST['_daisycon_cc'];
    if ($field) {
        update_post_meta($product->get_id(), '_daisycon_cc', wc_clean($field));
    }
}