求截取PHP指定字符串代码,该怎么解决

求截取PHP指定字符串代码
有下面一段html字符串：
0bea6955e9aafe4d8321c582cf788966aaaa0c6dc11e160d3b678d68754cc175188abbbb0c6dc11e160d3b678d68754cc175188acccc0c6dc11e160d3b678d68754cc175188adddd0c6dc11e160d3b678d68754cc175188a2c4968b15436f0dfcea480fc29df294c
要想输出下面内容：
0bea6955e9aafe4d8321c582cf788966aaaa0c6dc11e160d3b678d68754cc175188adddd0c6dc11e160d3b678d68754cc175188a2c4968b15436f0dfcea480fc29df294c
即删除中间两个0c6dc11e160d3b678d68754cc175188a前面的内容及0c6dc11e160d3b678d68754cc175188a的简易代码，由于还要输出为html,不用数组方式。
------解决方案--------------------

$s = '<td align="Center" rowspan="2" width="7%">aaaa<br>bbbb<br>cccc<br>dddd<br></td >';<br />echo preg_replace('/<br>\w+/', '', $s, 2);

<td align="Center" rowspan="2" width="7%">aaaa<br>dddd<br></td ><br />

------解决方案--------------------
1

echo preg_replace('/<br>[^<]+/', '', $s, 2);

2

echo preg_replace('/\(.+?\)/', '', $s);

------解决方案--------------------

echo preg_replace_callback('/<br>[^<]+/', 'foo', $s, 2); <br />function foo($m){<br />     return strpos($m[0], '(') !== false ? preg_replace('/\(.+?\)/','',$m[0]) : '';	    	 <br />}