求教一正则

<nav class="xqlj mt15">      <div class="spxq"><img src="/static/imghwm/default1.png"  data-src="1.jpg"  class="lazy"      style="max-width:90%"  style="max-width:90%" 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

回复讨论(解决方案)

有两个width和height，你要去掉哪个？

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

require('HtmlAttributeFilter.class.php');$str = '<nav class="xqlj mt15">      <div class="spxq"><img src="/static/imghwm/default1.png"  data-src="1.jpg"  class="lazy"      style="max-width:90%"  style="max-width:90%" alt="" border="0" /><iframe src="http://www.tudou.com/programs/view/html5embed.action?type=1&code=vZ00D1Xubu4&lcode=q711Bs57_Nw&resourceId=0_06_05_99" allowtransparency="true" allowfullscreen="true" allowfullscreeninteractive="true" scrolling="no" border="0" frameborder="0" style="width:1200px;height:500px;"></iframe></div>   </nav>';$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$obj->setIgnore(array('nav','div','iframe'));echo 'source str:
';echo htmlspecialchars($str).'

';echo 'filter str:
';echo htmlspecialchars($obj->strip($str));

有两个width和height，你要去掉哪个？

  都去掉

谢谢大家的热心回答