帝国cms模板内容页用到的if判断语句

<?php  if($navinfor[xb]==帅哥)  {  ?>  <DIV class="xbox nan">  <?  }else  {  echo "<DIV class=xbox>";  }  ?>

<?php  if($navinfor['titlepic'])  {  ?>  <a href='https://www.n360.cn/b2b/skin/default/image/nopic.gif' target='_blank'><img src='https://www.n360.cn/b2b/skin/default/image/nopic.gif' /></a>  <?  }else  {  ?>  <?  }  ?>