合并SQL / PHP列中的单元格

Question

我想合并下面图片中列A或B等列中的单元格：

该表是一个数据库。我现在所拥有的只是：

$polaczenie = @new mysqli($host, $db_user, $db_password, $db_name);
$wynik = mysqli_query($polaczenie,'SELECT * FROM grafik');
echo "<table cellpadding=7 border=3>";
  echo "<tr>";
    echo "<td>"."Dzień"."</td>"; 
    echo "<td>"."Zmiana"."</td>"; 
    echo "<td>"."Stanowisko 1"."</td>"; 
    echo "<td>"."a_1"."</td>"; 
    echo "<td>"."a_2"."</td>"; 
    echo "<td>"."a_3"."</td>"; 
    echo "<td>"."a_4"."</td>"; 
    echo "<td>"."Stanowisko 2"."</td>"; 
    echo "<td>"."b_1"."</td>"; 
    echo "<td>"."b_2"."</td>"; 
    echo "<td>"."b_3"."</td>"; 
    echo "<td>"."b_4"."</td>"; 
    echo "</tr>";

while ($row = $wynik->fetch_assoc()) {
    echo "<tr>";
    echo "<td>".$row['date']."</td>"; 
    echo "<td>".$row['shift']."</td>"; 
    echo "<td>".$row['stanowisko_1']."</td>"; 
    echo "<td>".$row['a_1']."</td>"; 
    echo "<td>".$row['a_2']."</td>"; 
    echo "<td>".$row['a_3']."</td>"; 
    echo "<td>".$row['a_4']."</td>"; 
    echo "<td>".$row['stanowisko_2']."</td>";
    echo "<td>".$row['b_1']."</td>"; 
    echo "<td>".$row['b_2']."</td>"; 
    echo "<td>".$row['b_3']."</td>"; 
    echo "<td>".$row['b_4']."</td>"; 
    echo "</tr>";

看起来像这样

而不是

Answer 1

如果它是Data和Dzien列，那么简单的rowspan就可以了：

jclass myClassArray = (*env)->FindClass(env, "[Lorg/apache/s4/core/ShareStruct;");