<?php use app\components\UserHelper; ?>
<?php foreach($xzclasses as $oneclass){ ?>
    <tr>
      <td><input type="radio" name="xzclassid" value="<?php echo $oneclass->id; ?>"></td>
      <td><?php echo $oneclass->name; ?></td>
      <td><?php echo $oneclass->grade; ?></td>
      <td><?php echo $oneclass->studentnum; ?></td>
    </tr>
<?php } ?>