inline td with th using loop in PHP - php

Question

So I have this tables on my database that I have to display as table in html. The problem is I do not know how I am going to inline my td with my th and add zero to the person who doesn't have allowance.
This is the image of my allowance table
.
So far this is what i have:
<?php
error_reporting(0);
include "./includes/connectdb.php";
$emp = "select * from employee";
$q = $dbhandle->query($emp);
if($q->num_rows>0){
$all = "select distinct allowance from emp_allowances order by allowance asc";
$a = $dbhandle->query($all);
if($a->num_rows>0) {
while($b = $a->fetch_assoc()){
$thallowance .= '<th>'.$b['allowance'].'</th>';
$empallowance = $b['allowance'];
}
}
while($r = $q->fetch_assoc()){
$id= $r['id'];
$name= $r['name'];
$all2 = "select * from emp_allowances order by allowance asc";
$c = $dbhandle->query($all2);
if($c->num_rows>0){
$tdallow='';
while($d = $c->fetch_assoc()){
$empid = $d['emp_id'];
$empallowance = $d['allowance'];
$amount = $d['amount'];
if($empid==$id){
$tdallow.='<td>'.$amount.'</td>';
}
}
}
$tbody .= '<tr>
<td>'.$name.'</td>
'.$tdallow.'
</tr>';
}
}
$thead = '
<thead>
<tr>
<th>Name</th>
'.$thallowance.'
</tr>
</thead>
';
?>
<table border=1>
<?php echo $thead; ?>
<tbody>
<?php echo $tbody; ?>
</tbody>
And from this code i got this result.

Answer 1

I changed your while loop, try to copy it and see if works.
The $tdarray sets all allowances to zero, if some of them has a greater value it is set in the employee allowances loop. This way if there is no allowance for an employee there will be zero and properly inline, because the default values (zeros) are preset.
Let me know if works.
<?php
error_reporting(0);
include "./includes/connectdb.php";
$emp = "select * from employee";
$q = $dbhandle->query($emp);
if($q->num_rows>0){
// array that will hold key value pairs for allowances
$tdarray = array();
$all = "select distinct allowance from emp_allowances order by allowance asc";
$a = $dbhandle->query($all);
if($a->num_rows>0) {
while($b = $a->fetch_assoc()){
$thallowance .= '<th>'.$b['allowance'].'</th>';
$empallowance = $b['allowance'];
// fill the array with keys (allowances) and default, zero values
$tdarray[$b['allowance']] = 0;
}
}
// Looping through employees
while($r = $q->fetch_assoc()){
$id= $r['id'];
$name= $r['name'];
$all2 = "select * from emp_allowances order by allowance asc";
$c = $dbhandle->query($all2);
if($c->num_rows>0){
$tdallow='';
// Looping through employee allowances
while($d = $c->fetch_assoc()){
$empid = $d['emp_id'];
$amount = $d['amount'];
$empallowance = $d['allowance'];
if($empid==$id){
$tdarray[$empallowance] = $amount;
}
}
}
$tbody .= '<tr>';
$tbody .= '<td>'.$name.'</td>';
foreach ($tdarray as $allowance => $amount) {
$tbody .= '<td>'.$amount.'</td>';
// reset to zero
$tdarray[$allowance] = 0;
}
$tbody .= '</tr>';
}

Answer 2

try adding else with your code:
if($empid==$id){
$tdallow.='<td>'.$amount.'</td>';
}else{ // add else block for print zero
$tdallow.='<td>0</td>';
}