[0] => <trclass="B"><tdwidth="4%"align="center">1</td><tdwidth="20%"align="center">2012-2013学年第一学期<br></td>
[1] => <trclass="H"><tdwidth="4%"align="center">2</td><tdwidth="20%"align="center"><br></td><tdwidth="22%"align="">[P209502]管理学基础<br></td>
[2] => <trclass="B"><tdwidth="4%"align="center">13</td><tdwidth="20%"align="center">2012-2013学年第二学期<br></td>
[3] => <trclass="H"><tdwidth="4%"align="center">14</td><tdwidth="20%"align="center"><br></td><tdwidth="22%"align="">[P209500]经济学基础<br></td>
如上我用正则匹配出
preg_match_all('/(\d)*<\/td>(\S)+?
<\/td>/',
但是我只需要:
<trclass="B"><tdwidth="4%"align="center">1</td><tdwidth="20%"align="center">2012-2013学年第一学期<br></td>
<trclass="B"><tdwidth="4%"align="center">13</td><tdwidth="20%"align="center">2012-2013学年第二学期<br></td>
请问怎么写?