可以打印多维数组，但不能回显单个值

发布数组后，我可以打印_r来显示整个数组，但我不能回显单个值。我需要获取这些单个值，以便将它们放在文本项的值标记中。目前，每次我发布页面时，这些值都会消失，这是因为我找不到如何获取相应的值。

当我打印_r（$subs）时，我得到了正确的值-

Array
(
    [0] => Array
        (
            ['subs_name'] => Image PC and load programs
            ['subs_target'] => 03/10/2015
            ['subs_owner'] => 1
        )
    [1] => Array
        (
            ['subs_name'] => Update Inventory
            ['subs_target'] => 03/17/2015
            ['subs_owner'] => 1
        )
    [2] => Array
        (
            ['subs_name'] => Deploy PC
            ['subs_target'] => 03/24/2015
            ['subs_owner'] => 1
        )
    [3] => Array
        (
            ['subs_name'] => Follow up with user
            ['subs_target'] => 03/31/2015
            ['subs_owner'] => 1
        )
)

如果我尝试回显$subs[0]['subs_target']，我不会得到任何回报。我确信我在做一些愚蠢的事情，但我无法确定那是什么。我扫描了几篇文章，但没有找到解决方案。

这是我用来设置数组的表单输入-

    while ($row = $stmt->fetch()) {
        echo "                  <tr>'n";
        echo "                      <td>'n";
        echo "<input type='"hidden'" name='"subs[$count]['subs_name']'" class='"none'" value='"" . $row['prosub_name'] . "'">";
        echo "<p>" . $row['prosub_name'] . "</p>";
        echo "</td>'n";
        echo "                      <td align='"center'">'n";
        echo "                          <input type='"text'" class='"datepicker'" name='"subs[$count]['subs_target']'" value='"" . $subs["$count"]['subs_target'] . "'">'n"; 
        echo "</td>'n";
        echo "                      <td align='"center'">'n";
        echo "                          <select name='"subs[$count]['subs_owner']'" class='"diedit'">'n"; 
        getUserDD($hid_owner, 'acc_tix_pro');
        echo "                          </select>'n"; 
        echo "                      </td>'n";
        echo "                  </tr>'n";
        $count++;
    }