求正责匹配字符串
<div class="tabs">
<ul>
<li class="current" ><span>剧集列表</span></li>
<li onclick="nova_update('eplist', '/show_eplist/showid_z1b5b8110561411e1a19e_type_list.html')"><span>分集剧情</span></li>
</ul>
</div>
$t = <<<html
<div class="tabs"> <ul> <li class="current" ><span>剧集列表</span></li> <li onclick="nova_update('eplist', '/show_eplist/showid_z1b5b8110561411e1a19e_type_list.html')"><span>分集剧情</span></li> </ul> </div>
html;
preg_match("# '(.*?)'\)#s",$t,$m);
echo $m[1];
