添加判断语句不显示没有内容的要素

application/default/views/scripts/review/index.phtml

@@ -10,6 +10,7 @@ $this->breadcrumb()->setSeparator(' > ');
 ?>
 <div id='rightPanel'>
 <h3>目前系统中专家库为<?php echo $this->stat['experts']; ?>人，新投稿元数据<?php echo $this->stat['draft']; ?>条，已接收元数据<?php echo $this->stat['accept']; ?>条，有<?php echo $this->stat['inreview']; ?>条元数据正在评审中，已完成评审元数据<?php echo $this->stat['reviewed']; ?>条，有<?php echo $this->stat['openreviewuser']; ?>个用户参与了<?php echo $this->stat['openreview']; ?>次评审。 <a href="/review/myreview">我参审的元数据</a></h3>
+<?php if ($this->mdreceived) : ?>
 <ul>
 <div class="title"><a href="/review/draft">元数据：最新收稿</a></div>
 <?php foreach($this->mdreceived as $md) : ?>
@@ -19,6 +20,7 @@ $this->breadcrumb()->setSeparator(' > ');
 <?php endforeach; ?>
 <li class="more"><a href="/review/draft">更多>></a></li>
 </ul>
+<?php endif; if ($this->mdaccepted) : ?>
 <ul>
 <div class="title"><a href="/review/accept">元数据：已接收</a></div>
 <?php foreach($this->mdaccepted as $md) : ?>
@@ -28,6 +30,7 @@ $this->breadcrumb()->setSeparator(' > ');
 <?php endforeach; ?>
 <li class="more"><a href="/review/accept">更多>></a></li>
 </ul>
+<?php endif; if ($this->mdinreview) : ?>
 <ul>
 <div class="title"><a href="/review/inreview">元数据：送审中</a></div>
 <?php foreach($this->mdinreview as $md) : ?>
@@ -37,6 +40,7 @@ $this->breadcrumb()->setSeparator(' > ');
 <?php endforeach; ?>
 <li class="more"><a href="/review/inreview">更多>></a></li>
 </ul>
+<?php endif; if ($this->mdreviewed) : ?>
 <ul>
 <div class="title"><a href="/review/reviewed">元数据：最新完成评审</a></div>
 <?php foreach($this->mdreviewed as $md) : ?>
@@ -46,4 +50,5 @@ $this->breadcrumb()->setSeparator(' > ');
 <?php endforeach; ?>
 <li class="more"><a href="/review/reviewed">更多>></a></li>
 </ul>
+<?php endif; ?>
 </div>