使用PHP检查创建表,使用之前的值和当前值(Array)

这是我的数据表1.我希望这个表更改为table2.我必须使用PHP.我使用foreach编写了一些代码,但这样做不正常. C

表格1

|-------+------------+--------------+---------+--------|
|Seq No | Student Id | Subject Name |  Exams  | Marks  |
|-------+------------+--------------+---------+--------|
|  1    | 200301     |   maths      |  Exam 1 |  25    |
|  2    | 200301     |   maths      |  Exam 2 |  45    |
|  3    | 200301     |   art        |  Exam 1 |  76    |
|  4    | 200301     |   art        |  Exam 2 |  42    |
|  5    | 200302     |   maths      |  Exam 1 |  71    |
|  6    | 200302     |   maths      |  Exam 2 |  78    |
|  7    | 200302     |   art        |  Exam 1 |  35    |
|  8    | 200302     |   art        |  Exam 2 |  61    |
|-------+------------+--------------+---------+--------|

我想用PHP创建类似table2.

表2

|-------+------------+-----------------+-----------------+
|       |            |     maths       |      art        |  
|Seq No | Student Id |-----------------|-----------------|
|       |            | Exam 1 | Exam 2 | Exam 1 | Exam 2 |
|-------+------------+-----------------+-----------------+
|  1    | 200301     |   25   |   45   |  76    |  42    |
|  2    | 200302     |   71   |   78   |  35    |  61    |
|-------+------------+--------+--------+--------+--------|

**我写了这样的一些.但这不能正常工作. **

$output .= "<table border=1>
          <tr bgcolor=#ffffff><td>SeqNo</td>
          <td>Student Id</td>
          <td>maths</td>
          <td>art</td>
          <td>Exam 1</td>
          <td>Exam 2</td></tr>";

          $studentCounter = 0;

foreach($result as $item)
            {
            $output .= "<tr><td>" . ++$studentCounter . " </td>  
                                        <td>" . $item[STUDENT_ID] . "</td>
                                        <td>" . $item[MATHS] . "</td> 
                                        <td>" . $item[ART] . "</td>
                                        <td>" . $item[EXAM_1] . "</td>
                                        <td>" . $item[EXAM_2] . "</td></tr>";

            }
 $output .= "</table>";

这是我的阵列

Array([1] => Array([STUDENT_ID] => 200301
               [SUBJECT_NAME] => maths
               [ASSIGNMENT_TITLE] => exam_1
               [MARKS] => 25 )
  [2] => Array([STUDENT_ID] => 200301
               [SUBJECT_NAME] => maths
               [ASSIGNMENT_TITLE] => exam_2
               [MARKS] => 45 )
  [3] => Array([STUDENT_ID] => 200301
               [SUBJECT_NAME] => art
               [ASSIGNMENT_TITLE] => exam_1
               [MARKS] => 76 )
  [4] => Array([STUDENT_ID] => 200301
               [SUBJECT_NAME] => art
               [ASSIGNMENT_TITLE] => exam_2
               [MARKS] => 42 )
  [5] => Array([STUDENT_ID] => 200302
               [SUBJECT_NAME] => maths
               [ASSIGNMENT_TITLE] => exam_1
               [MARKS] => 71 )
  [6] => Array([STUDENT_ID] => 200302
               [SUBJECT_NAME] => maths
               [ASSIGNMENT_TITLE] => exam_2
               [MARKS] => 78 )
  [7] => Array([STUDENT_ID] => 200302
               [SUBJECT_NAME] => art
               [ASSIGNMENT_TITLE] => exam_1
               [MARKS] => 35 )
  [8] => Array([STUDENT_ID] => 200302
               [SUBJECT_NAME] => art
               [ASSIGNMENT_TITLE] => exam_2
               [MARKS] => 61 )
 )

这是我的数组数据.我必须使用这个数组创建类似table2.任何人都可以帮助我.

解决方法:

如果我理解正确,你希望表2如图所示那么基于我将回答你的问题.

您可以使用下面的HTML,它看起来像您想要的表格.

<table border=1>
  <tr bgcolor=#ffffff>
    <td>SeqNo</td>
    <td>Student Id</td>
    <td colspan = "2">maths</td>
    <td colspan = "2">art</td>
    </tr>
    <tr>
    <td colspan = "2"></td>
    <td>Exam 1</td>
    <td>Exam 2</td>
    <td>Exam 1</td>
    <td>Exam 2</td>
  </tr>
      <tr>
    <td></td>
    <td></td>
    <td>Exam 1</td>
    <td>Exam 2</td>
    <td>Exam 1</td>
    <td>Exam 2</td>
  </tr>
</table>

想看看jsfiddle here

你没有发布你的sql,你不需要使用转发,你可以循环它,如下所示.

<table border=1>
  <tr bgcolor=#ffffff>
    <td>SeqNo</td>
    <td>Student Id</td>
    <td colspan = "2">maths</td>
    <td colspan = "2">art</td>
    </tr>
    <tr>
    <td colspan = "2"></td>
    <td>Exam 1</td>
    <td>Exam 2</td>
    <td>Exam 1</td>
    <td>Exam 2</td>
  </tr>
<?PHP while($row = $stmt -> fetch(PDO::FETCH_ASSOC){ ?>
  <tr>
    <td>$row["seqNo"]</td>
    <td>$row["studen_id"]</td>
    <td>$row["Exam1"]</td>
    <td>$row["Exam2"]</td>
    <td>$row["Exam1"]</td>
    <td>$row["Exam2"]</td>
  </tr>
<?PHP } ?>
</table>

请记住,这不是你的sql,所以调整它以满足你的需要,并在PDO中.