帝国CMS内容页直接用ifelse判断标签,随机缩略图

<? 
if($navinfor['vlink']=="") { 
echo '<p><video autoplay="autoplay" controls="controls" id="ecmsvideoid" width="百%"><source src="'.$navinfor[https].'://'.$navinfor[vvlink].'" /></video></p>'; 
} 
else{ 
echo '<iframe allowfullscreen="" frameborder="0" src="'.$navinfor[https].'://'.$navinfor[vlink].'" width="百%" height="450"></iframe>'; 
} 
?>