在多维数组

Question

从包含大量$values语句的$key循环中的foreach（包含＆＃39; s＆＃39;）或if获取多个未定义的索引。不确定在我的代码中使用isset的位置。是因为多维数组吗？

if($num_row)
{
    $html =  "<table id=\"myTable\" border=\"1\">";
    $html .= "
            <tr>
                <th></th>
                <th></th>
                <th>matching(%)</th>
                <th>HSD-M</th>
                <th>Turbo-Frame</th>
                <th>SupportBoard</th>
                <th>DistributionBoard</th>
                <th>DC-30</th>
                <th>GigaDigHD2</th>
                <th>HSS-6400</th>
                <th>HexVS</th>
            </tr>
            <tr><td>Device</td>
            <td>$device_name</td>";

    while($row = mysql_fetch_assoc($result))
    {
        $tester_name = $row['tester_name'];
        $config = $row['config'];
        $req_config = $row['configuration'];
        $board_name = $row['board_name'];

        //multi array used here
        $table_row{$tester_name}{$board_name} .= $config.","; 

    } //while

    //var_dump($table_row);

    foreach ($table_row as $i => $values)
    {
        //echo $i." ";
        $html .= "<tr><td>Tester</td>";
        $html .= "<td>$i</td>";
        $hsd = "None";
        $turbo = "None";
        $supp = "None";
        $distrib = "None";
        $dc = "None";
        $giga = "None";
        $hss = "None";
        $hex = "None";

        foreach ($values as $key => $value)
        {
            //echo $value;
            if($key == "DC-30")
            {
                $dc = $value;
            }
            elseif($key == "GigaDigHD2")
            {
                $giga = $value;
            }
            elseif($key == "HSD-M")
            {
                $hsd = $value;
            }
            elseif($key == "HSS-6400")
            {
                $hss = $value;
            }
            elseif($key == "HexVS")
            {
                $hex = $value;
            }
            elseif($key == "Turbo-Frame")
            {
                $turbo = $value;
            }
            elseif($key == "SupportBoard")
            {
                $supp = $value;
            }
            elseif($key == "DistributionBoard")
            {
                $distrib = $value;
            }
            //echo "$key<br>";  
        }

        $html .= "<td>%</td> 
        <td>$hsd</td>
        <td>$turbo</td>
        <td>$supp</td>
        <td>$distrib</td>
        <td>$dc</td>
        <td>$giga</td>
        <td>$hss</td>
        <td>$hex</td>
        </tr>";
    }
    $html .= "</table>";            
    echo $html;
}

编辑：我知道错误意味着什么。但是我不确定在我的代码中要改变什么。我知道它的要点是使用isset设置它是否尚未设置。我不确定是否应该为if循环中的每个变量设置我不这么认为，因为通知/错误指向索引，我不知道如何更改它因为我＆＃ 39; m使用多维数组。