php - 根据主题类型将mysql行提取到表中

Question

这是我的表格示例（为清晰起见重新格式化）

  Subject   Percentage  Grade
  English     40%       D
  Chemistry   80%       A
  Physics     50%       C

所以，基本上我想获取这些数据并以这种方式表示它：

  English   Chemistry    Physics
  40%           80%        50%
  D              A          C

我该怎么做？谢谢。

Answer 1

试试这个 ：

    select english , chemistry , physics from (


    select (select percentage from Table1 where subject = 'English' ) as english,
           (select percentage from Table1 where subject = 'Chemistry') as chemistry,
           (select percentage from Table1 where subject = 'Physics') as physics

    from Table1 group by english
    union all

    select (select Grade from Table1 where subject = 'English' ) as english,
           (select Grade from Table1 where subject = 'Chemistry') as chemistry,
           (select Grade from Table1 where subject = 'Physics') as physics

    from Table1 group by english
     ) t

输出：

 ENGLISH    CHEMISTRY   PHYSICS
  40%          80%        50%
   D            A          C

在这里演示

Answer 2

将数据提取到数组中，然后遍历数组以填充表行

$subject = array();
$row = mysql_fetch_row($result);
{
    $subjecta = $row[0]; 
    $marks =  $row[1];
    $grade =  $row[2];
    array_push($subject,$subjecta)
    $subject[$marks] = $grade ;
    $subject[$grade] = $marks ;

}
echo "<tr>";
foreach ($subject as $sts) 
{ 
echo "<th bgcolor='#BEBEBE'>$sts</th>"; 
}
echo "</tr>";