Online PHP editor | output for vnUZE

<?php $url = '<div><a class="nk" href="http://weibo.cn/u/1610526293?st=968f">阳光下的雪海</a><span class="ctt">:<a href="http://weibo.cn/pages/100808topic?extparam=%E4%B8%AD%E5%9B%BD%E4%B9%8B%E5%A3%B0&from=feed&st=968f" class="k">#中国之声#</a> <a href="http://weibo.cn/sinaurl?f=w&u=http%3A%2F%2Ft.cn%2FzO2NEZA&st=968f">http://t.cn/zO2NEZA</a></span>  <a href="http://weibo.cn/attitude/zAueIaySO/add?uid=1704540003&rl=0&st=968f">赞[0]</a> <a href="http://weibo.cn/repost/zAueIaySO?uid=1610526293&rl=0&st=968f">转发[0]</a> <a href="http://weibo.cn/comment/zAueIaySO?uid=1610526293&rl=0&st=968f#cmtfrm" class="cc">评论[0]</a> <a href="http://weibo.cn/fav/addFav/zAueIaySO?rl=0&st=968f">收藏</a> <span class="ct">1分钟前 来自手机微博触屏版</span></div>'; echo preg_replace("/(?<=href\=(\"|\'))(.+)(\'|\")/", "\3&afr=ad", $url);