decode images file wc

functions.php

<?php

add_filter('tscf_filter_codetemplate', function ($list, $order_id) {

    $order = wc_get_order($order_id);
    $file = get_post_meta($order->get_id(), '_billing_upload_main', true);

    $file_path = '';
    if ($file) {
        $file_arr = json_decode($file,true);
        if ($file_arr) {
           foreach ($file_arr as $key => $value) {
               $file_path .= sprintf('<a href="%s">%s</a> ', $value['url'], $value['name']);
               $file_path .= PHP_EOL;
           }
        }

     $list['{file}'] = $file_path;

    }
   
   
    return $list;
}, 20, 2);