<table class="table" style="width: 500px;border: 1px solid #dcdcdc">
 <tr>
     <th>用户名</th>
     <th>电话号码</th>
 </tr>
<?php if(!empty($data)){ foreach ($data as $val) {?>
    <tr style="height: 30px;">
        <th style="width: 200px"><?php echo $val['username'];?></th>
        <th style="width: 300px"><?php echo $val['phone'];?></th>
    </tr>
<?php }}?>
</table>