dynamically generate HTML table from MySQL - php

Question

I have three mysql tables subjects, examinations, examinfo
TABLE - SUBJECTS
subjectid
subjectname
subjectExamid
TABLE - EXAMINFO
examid
exam
TABLE EXAMINATIONS
fname
lname
studentid
score
subjectid
ON subject.subjectExamid = exam.examid
ON examination.subjectid = subject.subjectid
Now i would like to generate HTML table indicating scores students get per paper against subject
STRUCTURE TABLE OUTPUT
Student details against each subject score
EDIT CODE SAMPLE
<?php
$examinid = 3;
$subjects = mysqli_query(
$con,"
SELECT * FROM subjects
WHERE examid = '$examinid'
ORDER BY shortname ASC
");
$content = mysqli_query(
$con,"
SELECT DISTINCT exam.idcandidate, exam.sex, exam.fname, exam.lname
FROM examinations
AS exam
INNER JOIN examinfo
AS info
ON exam.id_subject = info.idsubject
WHERE info.idexam = '$examinid'
");
?>
<div id="table_1">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="table1tr">#</td>
<td class="table1tr">Candidate</td>
<td class="table1tr">ID</td>
<td class="table1tr">Sex</td>
<?php
// output subjects
while($subRow = mysqli_fetch_array($subjects)){
$arbv = strtoupper($subRow['shortname']);
$subjectname = ucwords(strtolower($subRow['subjectname']." - ".$subRow['subjectid'].""));
?>
<td class="table1tr" title="<?php echo $subjectname; ?>">
<?php echo $arbv; ?>
</td>
<?php
}
?>
<td class="table1tr">Exam</td>
</tr>
<?php
while($stdnt = mysqli_fetch_array($content)){
$fullname = ucwords(strtolower("$stdnt[lname] $stdnt[fname]"));
$studentid = str_replace(array('/', 'M', 'W', 'S', 'F', '-'), "",$stdnt['idcandidate']);
if($sex = $stdnt['sex'] == Male){
$sex = M;
}else{ $sex = F; }
$id_subject = $stdnt['id_subject'];
$x++;
$zebra_1 = ($x%2)? 'TableZebra_1': 'TableZebra_2';
?>
<tr>
<td class="<?Php echo $zebra_1; ?>"><?php echo $count++; ?></td>
<td class="<?Php echo $zebra_1; ?>"><?Php echo $fullname; ?></td>
<td class="<?Php echo $zebra_1; ?>"><?php echo $studentid; ?></td>
<td class="<?Php echo $zebra_1; ?>"><?php echo $sex; ?></td>
<td class="<?Php echo $zebra_1; ?>">
<!-- Problem is here how to output the subject grades $grade -->
<!--
My first unsuccessful approach
SELECT score
FROM examinations AS test
INNER JOIN examinfo AS testinfo ON testinfo.idsubject = test.id_subject
WHERE testinfo.idexam
IN (
SELECT idexam
FROM examinfo
WHERE idexam = $examinid
)
AND test.id_subject = $id_subject AND test.idcandidate = '$studentid'
Then output results - But this falls it shows one student subjects in one cell
-->
</td>
<td class="<?Php echo $zebra_1; ?>">Exam</td>
</tr>
<?php
} // loop content
?>
</table>
</div>

Answer 1

If your solution is not concat(); you may first
follow the simple steps
1 loop $contents // to get info such as studentid
2 inside the loop of $contents loop $subjects // to get all subjects including subjectids
3 inside $subject loop, loop examinations table where studentid = '$studentid' AND subjectid = '$subjectid'
if step three return null echo empty cell otherwise echo cell with score
I have no time to test this, but you may follow the steps and it will work otherwise try google search