为什么PHP在表中打印出奇怪的结果？

Question

我在表中显示了使用PHP进行Mysql查询的结果。到目前为止一切顺利。

在我的计算机和其他几台计算机中，结果将输出如下：

但是某些计算机上的结果会输出如下奇怪的内容：

有些数字是重复的，有些数字是用字母写的..

脚本如下：

<?php

require_once("../includes/psl-config.php");

$link = mysqli_connect(DB_HOST, DB_USER, DB_PASS);
mysqli_select_db($link, DB_NAME);
mysqli_set_charset($link, "utf8");  

    $result = mysqli_query($link, "SELECT Desde , date_add(Desde, INTERVAL 6 DAY) AS Hasta, W, C, 
CS, CD from ( SELECT STR_TO_DATE(CONCAT( yearweek(orders_header.created_at - INTERVAL 4 DAY) , ' Thursday'), '%X%V %W') as Desde,
 WEEK(orders_header.created_at - INTERVAL 4 DAY) as W, 
count(orders_header.id) as C, count(distinct `store_id`) as CS, count(distinct `dv_guy_id`) as CD
 FROM `orders_header` where delivered=1 and is_canceled=0 GROUP BY STR_TO_DATE(CONCAT( 
yearweek(orders_header.created_at - INTERVAL 4 DAY) , ' Thursday'), '%X%V %W')) as XX order by W 
desc");

if ( mysqli_num_rows($result) > 0) {
  while($row = mysqli_fetch_array($result)){

    $desde=date("d/m/Y", strtotime($row[0]));
    $hasta=date("d/m/Y", strtotime($row[1]));
      echo '<tr>
              <td class="text-center">Desde: '.$desde.' .. Hasta: '.$hasta.'</td>
              <td class="text-center" style="font-size:20px">'.$row[3].'</td>
              <td class="text-center" style="font-size:20px">'.$row[4].'</td>
              <td class="text-center" style="font-size:20px">'.$row[5].'</td>
            </tr>';
  }
}


?>  

我唯一能想到的是，这与查询中日期的计算有关