While Loop For Table PHP - php

Question

I'm trying to do this in while loop PHP, number of assignments are unlimited so rowspan should also adjust itself with the number of rows, is there any proper way to do it with minimum numbers of line?
<table border="1" cellpadding="5" cellspacing="0">
<thead>
<tr>
<th>Assignment No</th>
<th>Student Name</th>
<th>Assignment Marks</th>
<th>Overall Result</th>
</tr>
</thead>
<tbody>
<tr>
<td align="center">1</td>
<td align="center">S1</td>
<td align="center">5</td>
<td rowspan="3" align="center">B Grade</td>
</tr>
<tr>
<td align="center">2</td>
<td align="center">S1</td>
<td align="center">8</td>
</tr>
<tr>
<td align="center">3</td>
<td align="center">S1</td>
<td align="center">7</td>
</tr>
</tbody>
</table>

Answer 1

Try This:
<? foreach($dataarray as $data)
{?>
<tbody>
<tr>
<td align="center"><? echo $data[0]; ?></td>
<td align="center"><? echo $data[1]; ?></td>
<td align="center"><? echo $data[2]; ?></td>
</tr>
<? if($data[3]!=Null) { ?>
<td rowspan="3" align="center"><? echo $data[3]; ?></td>
<? } ?>
<? } ?>
and put if condition for last column

Answer 2

Assuming that data comes in a linear fashion (ie a plain one dimensional array), and that the grade is not in the array, I'd do something like this:
<?
$sizeofArray = count($data);
$rowspan = floor($sizeofArray/3);
for($arrCnt = 0; $arrCnt < $sizeofArray; $arrCnt +=3)
{?>
<tbody>
<tr>
<td align="center"><?=$data[$arrCnt]; ?></td>
<td align="center"><?=(($arrCnt+1 < $sizeofArray)?$data[$arrCnt+1]:" "); ?></td>
<td align="center"><?=(($arrCnt+2 < $sizeofArray)?$data[$arrCnt+2]:" "); ?></td>
</tr>
<? if($data[3]!=Null) { ?>
<td rowspan="<?=$rowspan?>" align="center"><?=$grade; ?></td>
<? } ?>
<? } ?>
EDIT: added "padding" code, to avoid index out of bounds error

Answer 3

Based on your case, rowspan is different from one student to another. What you would want to do, is group data by student. The number of assignments per student is what will give you rowspan value.
While ... {
$data['student'][] = ['name' => $row -> name]; // all student inf
$data['student][]['assignments'][] = ['id' => $row -> assignement_id];//student assigments
}
Hope this help or put in the right direction to resolve your problem.
use foreach to loop
foreach ($data as $student){
$rowspan = count($student['assignments'];
foreach ($student['assigments'] as $assignment ){
// html table
}
}