if else 语句 js 嵌套在 php while 循环语句中 - 结果出现在循环之外/未出现

Question

This is my code - I am trying to add a class upon a boolean result that is coming from the database. But when I run my code the echo'ing is happening outside of my loop and where it is supposed to be echo'ed is blank. I believe this to be syntax but can't seem to find the answer while combing through other answers.

while($record = mysqli_fetch_assoc($results))
{

    $invoice .= '<tr>
                    <th scope="row" class="displayField" ><a href="orderView.php?invoiceID='.$record['id'].'">'.$record['nOrderNum'].'</a></th>
                    <td class="displayField"><a href="#">'.$record['strOrderDate'].'</a></td>
                    <td class="displayField"><a href="#">$'.$record['nPrice'].'</a></td>
                    <td class="displayField"> 
               <div class="toggle-btn ';
                if($record['bOrderToggle'] != 1){
                   echo('');
                } else {
                       echo('active');
                   }
               $invoice .= '"><input id="switch" type="checkbox" checked class="checking" name="nInvoiceID" />
               <span class="round-btn"></span>
               </div>
            </tr>';
}

Answer 1

Try this:

<?php while($record = mysqli_fetch_assoc($results)): ?>
    <tr>
        <th scope="row" class="displayField" ><a href="orderView.php?invoiceID=<?= $record['id'] ?>"><?=$record['nOrderNum']?></a></th>
        <td class="displayField"><a href="#"><?= $record['strOrderDate'] ?></a></td>
        <td class="displayField"><a href="#">$<?= $record['nPrice'] ?></a></td>
        <td class="displayField"> 
            <div class="toggle-btn <?= ($record['bOrderToggle'] != 1)? '': 'active' ?>">
                <input id="switch" type="checkbox" checked class="checking" name="nInvoiceID" />
                <span class="round-btn"></span>
            </div>
        </td>
 </tr>
<?php endwhile; ?>