Php 标记最新/最大条目

我有一张有文件的桌子，想把它们列出来。我想最新的条目是红色的。我该怎么做

$q = "SELECT * FROM documents WHERE uid = '$uid'";
$r = mysqli_query($dbc, $q);
while($row=mysqli_fetch_assoc($r)){ ?> 

<p <?php if(this doc has the largest docid){style="color=red;"} ?>><?php echo $row['doctitle']; ?></p></br>

<?php }

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谢谢

样式已损坏。我希望最新的条目为红色？？

$q = "SELECT * FROM documents WHERE uid = '$uid' ORDER BY ID DESC ";
$r = mysqli_query($dbc, $q);

$i = 1;
while($row=mysqli_fetch_assoc($r)){ ?> 

<p <?php if($i == 1)echo 'style="color=red;'; ?>><?= $row['doctitle'] ?></p>
</br>
$i++;
<?php }

$q = "SELECT * FROM documents ORDER BY uid DESC LIMIT 1;";
$r = mysqli_query($dbc, $q);
$row = mysqli_fetch_assoc($r);

echo $row['doctitle'];