PHP dropdown inside table - php

Question

I have a table where all the values are selected from the database, but some cells are empty. How do i put a dropdown list inside that empty cell. The values from the dropdown must come from the database
This is my code:
<?php
include("css/style.php");
/* Attempt MySQL server connection. Assuming you are running MySQL
server with default setting (user 'root' with no password) */
$link = mysqli_connect("localhost", "root", "Iamthebest1009", "dktp");
// Check connection
if ($link === false) {
die("ERROR: Could not connect. " . mysqli_connect_error());
}
$dropdown_list = '';
$sql = "SELECT * FROM orden";
$result_list = mysqli_query($link, $sql);
if (mysqli_num_rows($result_list) > 0) {
$dropdown_list = '<select>';
while ($row = mysqli_fetch_array($result_list)) {
unset($id, $name);
$id = $row['id'];
$name = $row['id'];
$dropdown_list .= '<option value="' . $id . '">' . $name . '</option>';
}
$dropdown_list .= '</select>';
}
// Attempt select query execution
$sql = "SELECT * FROM Norm LEFT JOIN Cluster ON norm.cluster_id = cluster.id LEFT JOIN Orden ON norm.orden_id = orden.id ORDER BY norm_name";
if ($result = mysqli_query($link, $sql)) {
if (mysqli_num_rows($result) > 0) {
echo '<form method="POST">';
echo "<table>";
echo "<tr>";
echo "<th>Norm id</th>";
echo "<th>Norm</th>";
echo "<th>Omschrijving</th>";
echo "<th>Clusteren</th>";
echo "<th>Ordenen</th>";
echo "</tr>";
while ($row = mysqli_fetch_array($result)) {
if ($row['orden_name']) {
$data_list = $row['id'];
} else {
$data_list = $dropdown_list;
}
echo "<tr>";
echo "<td>" . $row['norm_id'] . "</td>";
echo "<td>" . $row['norm_name'] . "</td>";
echo "<td>" . $row['description'] . "</td>";
echo "<td>" . $row['cluster_name'] . "</td>";
echo "<td>" . $data_list . "</td>";
echo "</tr>";
}
echo "</table>";
echo '<input type="submit" </input><form>';
// Free result set
mysqli_free_result($result);
} else {
echo "No records matching your query were found.";
}
} else {
echo "ERROR: Could not able to execute $sql. " . mysqli_error($link);
}
if(isset($_POST['submit']))
{
$sql = "INSERT INTO norm (orden_id) VALUES ('$data_list')";
if(mysqli_query($link, $sql)){
echo "Records added successfully.";
} else{
echo "ERROR: Could not able to execute $sql. " . mysqli_error($link);
}
}
// Close connection
mysqli_close($link);
?>

Answer 1

you can check this code. when $row['cluster_name'] empty then generate dropdown and first create dropdown then check your data exit or not but not tested
<?php
include("css/style.php");
/* Attempt MySQL server connection. Assuming you are running MySQL
server with default setting (user 'root' with no password) */
$link = mysqli_connect("localhost", "root", "Iamthebest1009", "dktp");
// Check connection
if ($link === false) {
die("ERROR: Could not connect. " . mysqli_connect_error());
}
$dropdown_list = '';
$sql = "SELECT * FROM orden";
$result_list = mysqli_query($link, $sql);
if (mysqli_num_rows($result_list) > 0) {
$dropdown_list = '<select>';
while ($row = mysqli_fetch_array($result_list)) {
unset($id, $name);
$id = $row['id'];
$name = $row['orden_name'];
$dropdown_list .= '<option value="' . $id . '">' . $name . '</option>';
}
$dropdown_list .= '</select>';
}
// Attempt select query execution
$sql = "SELECT * FROM Norm LEFT JOIN Cluster ON norm.cluster_id = cluster.id LEFT JOIN Orden ON norm.orden_id = orden.id ORDER BY norm_name";
if ($result = mysqli_query($link, $sql)) {
if (mysqli_num_rows($result) > 0) {
echo "<table>";
echo "<tr>";
echo "<th>Norm id</th>";
echo "<th>Norm</th>";
echo "<th>Omschrijving</th>";
echo "<th>Clusteren</th>";
echo "<th>Ordenen</th>";
echo "</tr>";
while ($row = mysqli_fetch_array($result)) {
if ($row['cluster_name']) {
$data_list = $row['cluster_name'];
} else {
$data_list = $dropdown_list;
}
echo "<tr>";
echo "<td>" . $row['norm_id'] . "</td>";
echo "<td>" . $row['norm_name'] . "</td>";
echo "<td>" . $row['description'] . "</td>";
echo "<td>" . $data_list . "</td>";
echo "<td>" . $row['orden_name'] . "</td>";
echo "</tr>";
}
echo "</table>";
// Free result set
mysqli_free_result($result);
} else {
echo "No records matching your query were found.";
}
} else {
echo "ERROR: Could not able to execute $sql. " . mysqli_error($link);
}
// Close connection
mysqli_close($link);
?>