Live Search in PHP using AJAX working, but buttons not in td

Question

my live search in working perfectly, but my tags are not in td. I can't figure out what is the problem. The picture, and the code are below. Thank you in advance. The problem is down there in td, the the tags. how it looks like

enter code here    
<?php

@include('./config/constants.php');
$output = '';

if (isset($_POST['query'])) {
    $search = $_POST['query'];
    $stmt = $conn->prepare("SELECT * FROM clients WHERE full_name LIKE CONCAT('%',?,'%') OR email LIKE  CONCAT('%',?,'%')");
    $stmt->bind_param("ss", $search, $search);
} else {
    $stmt = $conn->prepare("SELECT * FROM clients");
}
$stmt->execute();
$result = $stmt->get_result();

if ($result->num_rows > 0) {
    $output = "<tr>
                <th>ID</th>
                <th>Full Name</th>
                <th>E-mail</th>
                <th>Phone</th>
                <th>City</th>
                <th>Address</th>
                <th>Actions</th>
            </tr>
            ";
    while ($row = $result->fetch_assoc()) {
        $output .= "<tr>
                        <td>" . $row['id'] . "</td>
                        <td>" . $row['full_name'] . "</td>
                        <td>" . $row['email'] . "</td>
                        <td>" . $row['phone'] . "</td>
                        <td>" . $row['city'] . "</td>
                        <td>" . $row['address'] . "</td>
                        <td>"
?>
        <a href="<?php echo SITEURL; ?>/update-client.php?id=<?php echo $row['id']; ?>" class="main-btn">Update Client</a>
        <a href="<?php echo SITEURL; ?>/delete-client.php?id=<?php echo $row['id']; ?>" class="danger-btn">Delete Client</a>
<?php
        "</td>
                    </tr>";
    }
    echo $output;
} else {
    echo "<h3>No Records found!</h3>";
}

Answer 1

You're outputting the links before the table rows.
You output them directly and then later output the rows in the variable $output .
Remove the ?> and <?php tags in your while loop and have the buttons be part of the $output string

while ($row = $result->fetch_assoc()) {
    $output .= "<tr>
                    <td>" . $row['id'] . "</td>
                    <td>" . $row['full_name'] . "</td>
                    <td>" . $row['email'] . "</td>
                    <td>" . $row['phone'] . "</td>
                    <td>" . $row['city'] . "</td>
                    <td>" . $row['address'] . "</td>
                    <td>" . '<a href="'.SITEURL.'/update-client.php?id='.$row['id'].'" class="main-btn">Update Client</a>'.
                            '<a href="'.SITEURL.'/delete-client.php?id='.$row['id'];.'" class="danger-btn">Delete Client</a>'.
                  ."</td>
                </tr>";
}