Export main image url and additional image urls to separate columns (https://www.webtoffee.com/product/product-import-export-woocommerce/)

functions.php

<?php //do not copy this line
add_filter('wt_iew_alter_export_data', 'wt_iew_alter_export_images_separate_column', 10, 6);
if(!function_exists('wt_iew_alter_export_images_separate_column')){
    function wt_iew_alter_export_images_separate_column($export_data, $offset, $is_last_offset, $file_as, $to_export, $csv_delimiter) {
        if ($to_export == 'product') {            
            if (isset($export_data['body_data'])) {
                foreach ($export_data['body_data'] as $key => $value) {  
                    if(isset($value['images']) && !empty($value['images'])) {                        
                        $images = explode('|', $value['images']);  
                        foreach ($images as $image_key => $image) {
                            $export_data['body_data'][$key]['image_'.$image_key] = $image;
                            $export_data['head_data']['image_'.$image_key] = 'image_'.$image_key;
                            
                        }
                        unset($export_data['body_data'][$key]['images']);
                    }                                           
                    
                }
            }
             unset($export_data['head_data']['images'] );
        }
        return $export_data;
    }
}