求教一正则

[每天进步一点点e]

<nav class="xqlj mt15">
      <div class="spxq"><img src="1.jpg" width="1200" height="800" alt="" border="0" /><iframe src="http://www.tudou.com/programs/view/html5embed.action?type=1&code=vZ00D1Xubu4&lcode=q711Bs57_Nw&resourceId=0_06_05_99" allowtransparency="true" allowfullscreen="true" allowfullscreeninteractive="true" scrolling="no" border="0" frameborder="0" style="width:1200px;height:500px;"></iframe></div>
   </nav>

怎么去掉 这段里的 width 和 height

[一起混吧]

有两个width和height，你要去掉哪个？

[傲雪星枫]

参考：http://blog.csdn.net/fdipzone/article/details/11884285

[傲雪星枫]

require('HtmlAttributeFilter.class.php');

$str = '<nav class="xqlj mt15">
      <div class="spxq"><img src="1.jpg" width="1200" height="800" alt="" border="0" /><iframe src="http://www.tudou.com/programs/view/html5embed.action?type=1&code=vZ00D1Xubu4&lcode=q711Bs57_Nw&resourceId=0_06_05_99" allowtransparency="true" allowfullscreen="true" allowfullscreeninteractive="true" scrolling="no" border="0" frameborder="0" style="width:1200px;height:500px;"></iframe></div>
   </nav>';

$obj = new HtmlAttributeFilter();

// 允许id属性
$obj->setAllow(array('src','alt','border'));

$obj->setException(array());

// img 标签忽略,不过滤任何属性
$obj->setIgnore(array('nav','div','iframe'));

echo 'source str:<br>';
echo htmlspecialchars($str).'<br><br>';
echo 'filter str:<br>';
echo htmlspecialchars($obj->strip($str));

[每天进步一点点e]

引用 1 楼 jordan102 的回复:

有两个width和height，你要去掉哪个？

都去掉

[每天进步一点点e]

谢谢大家的热心回答