Remove MySQL row with button - php

Question

I am really struggling here and not sure why. I am trying to remove a row in my data base when the user click the delete button thats in the same button as the row their trying to remove.
Home.php
<table class="table table-bordered table-striped table-responsive sortable">
<tr class="header">
<td>id</td>
<td>Rep</td>
<td>Date</td>
<td>Name</td>
<td>P_O</td>
<td>Due Date</td>
<td>Terms</td>
<td>Aging</td>
<td>Open Balance</td>
<td>remove</td>
</tr>
<?php
while($row = mysql_fetch_array($query)) {
$className ="";
if ($row['Aging'] >= 45)
{
$className="danger";
}
else if($row['Aging'] >= 25 && $row['Aging'] <= 44)
{
$className="warning";
}
echo "<tr class='$className'>";
echo "<td>".$row['id']."</td>";
echo "<td>".$row['Rep']."</td>";
echo "<td>".$row['Date']."</td>";
echo "<td>".$row['Name']."</td>";
echo "<td>".$row['P_O']."</td>";
echo "<td>".$row['Due_Date']."</td>";
echo "<td>".$row['Terms']."</td>";
echo "<td>".$row['Aging']."</td>";
echo "<td>".$row['Open_Balance']."</td>";
echo "<td><button id='" .$row['id']. "' value='" .$row['id']. "' class='btn btn-danger'> Delete</button></td>";
}
?>
</table>
deletepage.php
// Create connection
$conn = mysqli_connect($servername, $username, $password, $dbname);
// Check connection
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
if(isset($_GET['id'])){
$userID = (int) $_GET['id'];
if(!empty($_GET['id'])){
$delete = mysqli_query($conn, "DELETE FROM Book1 WHERE id='$userID'");
}
if($delete){
echo "Record deleted successfully";
}else{
echo "Sorry, record could not be deleted";
}
}
?>

Answer 1

If you connect with mysqli, use mysqli throughout.
I've added an i here:
$delete = mysqli_query($conn, "DELETE FROM Book1 WHERE id='$userID'");
And change your button once to this. You aren't passing the variable to get currently, you;d do that by adding a question mark to the URL and specifying variables. Also, Since you are using twitter bootstrap, anchors with class btn will look like a button, so a form is not necessary.
echo "<td><a href='deletepage.php?id=" .$row['id']. "' value='" .$row['id']. "' class='btn btn-danger'> Delete</a></td>";

Answer 2

Starting at while($row = mysql_fetch_array($query)) {, it looks like you start a <tr>, but it doesn't look like you ever close it. At the bottom of your <td>s, you'll want a echo "";
Not a huge deal, and this won't fix your issue.
Like I said in the comment, action isn't realyl an attribute of <button>. See here
What you will probably need to do is wrap it in a form, which you said you did, and add type="submit" to the button tags.
<form action="deletepage.php" method="GET">
...table html
echo "<td><button id='" .$row['id']. "' type="submit" value='" .$row['id']. "' class='btn btn-danger'> Delete</button></td>";
</form>
This sounds like what your issue is, to me at least. You need to submit an html form to deletepage.php, or try another route like an AJAX request to deletepage.php.