Add data to html table - php

Question

I have a html table which takes data from database.
Here is my sql query:
// 1.Get data
// data for final table
// format is [username][projectNo] => [process1, process2, ..., processN]
$result = [];
// map project no to its title
$projectNoToTitle = [];
$sql = '
SELECT uid, username, staff_id, longname
FROM `user`
ORDER BY username
';
$query = mysqli_query($conn, $sql);
// for each user
while ($data = mysqli_fetch_assoc($query)) {
$sql2 = '
SELECT a.* FROM
(
(
-- select pairs project - leader
SELECT p.projectNo, p.title, CONCAT(upr.process, (upr.role) ) AS process
FROM project p
LEFT JOIN user_project upr ON p.projectNo = upr.projectNo
AND upr.username = "' . mysqli_real_escape_string($conn, $data['username']) . '"
)
) AS a
ORDER BY a.projectNo
';
$query2 = mysqli_query($conn, $sql2);
// for each project => process pair of user
while ($data2 = mysqli_fetch_assoc($query2)) {
$staff_id = $data['staff_id'];
$longname = $data['longname'];
$username = $data['username'];
$projectNo = $data2['projectNo'];
$projectTitle = $data2['title'];
$process = $data2['process'];
$projectNoToTitle[$projectNo] = $projectTitle;
if (!isset($result[$username])) {
$result[$username] = [];
}
if (!isset($result[$username][$projectNo])) {
$result[$username][$projectNo] = [];
}
if ($process) {
$result[$username][$projectNo][] = $process;
}
}
}
Then I want to print data horizontally and vertically in the table:
<table style="background-color:rgb(238, 238, 238)" id="dataTable4" class="tablesorter" class="tblD" border="0" cellpadding="0" cellspacing="1">
<?php
// 2. Output table
// create table header
// it's columns should contain all projects
if ($result) {
$header ='<th>Staff ID</th>
<th>Full Name</th>
<th>Username</th>' .
array_reduce(array_values($projectNoToTitle), function ($p, $n) {
return $p . '<th>Project ' . htmlspecialchars($n) . '</th>';
});
// output body
$body = '';
foreach ($result as $username => $usernameData) {
$row = '<td>' . htmlspecialchars($longname) . '</td>' . '<td>' . htmlspecialchars($staff_id) . '</td>' . '<td>' . htmlspecialchars($username) . '</td>';
foreach ($projectNoToTitle as $projectNo => $projectTitle) {
$r = isset($usernameData[$projectNo])
? implode(', ', $usernameData[$projectNo])
: 'N/A';
$row .= '<td>' . htmlspecialchars($r) . '</td>';
}
$body .= "<tr>$row</tr>";
}
echo "<thead>$header</thead><tbody>$body</tbody>";
}// \2. Output table
?>
I am able to print username but got problem with staff_id and longname. Here is my output right now.
System takes last name from table username and prints it for every username in the list

Answer 1

The problem is that you're not putting $longname and $staff_id into the $results array. When you print the table, you just use those variables, which contain the values from the last user in the database.
Change the loop that processes the database results to:
while ($data2 = mysqli_fetch_assoc($query2)) {
$staff_id = $data['staff_id'];
$longname = $data['longname'];
$username = $data['username'];
$projectNo = $data2['projectNo'];
$projectTitle = $data2['title'];
$process = $data2['process'];
$projectNoToTitle[$projectNo] = $projectTitle;
if (!isset($result[$username])) {
$result[$username] = [ 'longname' => $longname, 'staff_id' => $staff_id, 'projects' => []];
}
if (!isset($result[$username]['projects'][$projectNo])) {
$result[$username]['projects'][$projectNo] = [];
}
if ($process) {
$result[$username]['projects'][$projectNo][] = $process;
}
}
Then the code that builds the table should be:
foreach ($result as $username => $usernameData) {
$row = '<td>' . htmlspecialchars($usernameData['longname']) . '</td>' . '<td>' . htmlspecialchars($usernameData['staff_id']) . '</td>' . '<td>' . htmlspecialchars($username) . '</td>';
foreach ($projectNoToTitle as $projectNo => $projectTitle) {
$r = isset($usernameData['projects'][$projectNo])
? implode(', ', $usernameData['projects'][$projectNo])
: 'N/A';
$row .= '<td>' . htmlspecialchars($r) . '</td>';
}
$body .= "<tr>$row</tr>";
}