Delete MySQL entry from HTML page - php

Question

I'm trying to design a control page for my website that allows admins to delete requests to use a 3D printer at my school. The page displays a query of the schedule from the MySQL database and puts a delete button next to every entry. However, I would like to link the information in each entry to its respective delete button and have no idea how to do that. You can see the page itself here: http://kepler.covenant.edu/~techclub/PHP/manage%20printer%20schedule.php and this is my code for displaying the information
if ($result = $mysqli->query($query)) {
// see if any rows were returned
if ($result->num_rows > 0) {
// yes
// print them one after another
echo "<table cellpadding=10 border=1>";
echo "<tr>";
echo "<th>Control</th>";
echo "<th>Student ID</th>";
echo "<th>Last Name</th>";
echo "<th>First Name</th>";
echo "<th>Date and Time</th>";
echo "<th>Description</th>";
echo "</tr>";
$key = 1;
while($row = $result->fetch_array()) {
echo '<form method="POST" name="deleterequest" action = "delete request.php">';
echo "<tr>";
echo "<td><input name='".$row[5]."'type='submit' value='Delete' ></td>";
echo "<td>".$row[0]."</td>";
echo "<td>".$row[1]."</td>";
echo "<td>".$row[2]."</td>";
echo "<td>".$row[3]."</td>";
echo "<td>".$row[4]."</td>";
echo "</tr>";
echo "</form>";
}
echo "</table>";
}
else {
// no
// print status message
echo "No upcoming prints found!";
}
// free result set memory
$result->close();
}
I can't figure out how to link the information in a row with the delete button that I put in the row to send to the delete request.php program (which I have no code for yet)

Answer 1

you should put hidden field that hold each record id.
As below
while($row = $result->fetch_array()) {
echo "<tr>";
echo "<td>";
echo '<form method="POST" name="deleterequest" action = "delete request.php">';
echo "<input name='recored_id' type='hidden' value='".$row['id']."' >";
echo "<input name='delete'type='submit' value='Delete' >";
echo "</form>";
echo "</td>";
echo "<td>".$row[0]."</td>";
echo "<td>".$row[1]."</td>";
echo "<td>".$row[2]."</td>";
echo "<td>".$row[3]."</td>";
echo "<td>".$row[4]."</td>";
echo "</tr>";
echo "</form>";
}
Now from your request.php page you should do something like this
$recored_id = (int) $_POST['recored_id'];
$sql = "DELETE FROM table_name WHERE recored_id='$recored_id'";
Don't forget to give this code some security validation
all the best,

Answer 2

You're going to need some hidden inputs, like so:
while($row = $result->fetch_array()) {
echo "<tr>";
echo '<td><form method="POST" name="deleterequest" action = "deleterequest.php">';
echo "<input type='hidden' name='val0' value='" . $row[0] . "'>";
echo "<input type='hidden' name='val1' value='" . $row[1] . "'>";
echo "<input type='hidden' name='val2' value='" . $row[2] . "'>";
echo "<input type='hidden' name='val3' value='" . $row[3] . "'>";
echo "<input type='hidden' name='val4' value='" . $row[4] . "'>";
echo "<input name='".$row[5]."'type='submit' value='Delete' >";
echo "</form></td>";
echo "<td>".$row[0]."</td>";
echo "<td>".$row[1]."</td>";
echo "<td>".$row[2]."</td>";
echo "<td>".$row[3]."</td>";
echo "<td>".$row[4]."</td>";
echo "</tr>";
}
You should change the name of these inputs though