file_get_contents第二波！正则匹配很欢乐解决思路

file_get_contents第二波！正则匹配很欢乐
问题是这样的 file_get_contents 出来的内容是这样

.....
<span class="singer" style="width: 95px;">
<a href="artist/001">json</a>
</span>
.....
<span class="singer" style="width: 95px;">
<a href="artist/002">ajax</a>
</span>
....
<span class="singer" style="width: 95px;">
<a href="artist/003">php</a>
<span>/</span>
<a href="artist/004">mysql</a>
</span>

我想得到的结果是

PHP code

array("json","ajax","php+mysql");

PHP code

$s = <<< TXT.....<span class="singer" style="width: 95px;"><a href="artist/001">json</a></span>.....<span class="singer" style="width: 95px;"><a href="artist/002">ajax</a></span>....<span class="singer" style="width: 95px;"><a href="artist/003">php</a><span>/</span><a href="artist/004">mysql</a></span>TXT;preg_match_all("/<span.+<a.+>(.+)</isU", $s, $r);print_r($r[1]);
[解决办法]
PHP code
 $s=<<<html<span class="singer" style="width: 95px;"><a href="artist/001">json</a></span>.....<span class="singer" style="width: 95px;"><a href="artist/002">ajax</a></span><span class="aa" style="width: 95px;"><a href="artist/002">ajax</a></span>....<span class="singer" style="width: 95px;"><a href="artist/003">php</a><span>/</span><a href="artist/004">mysql</a></span>html; $s= str_replace('<span>/</span>','',$s);preg_match_all('/<span class="singer"[^>]*>(.*)<\/span>/isU',$s,$m);foreach($m[1] as $v){    $v=preg_replace('/<[^>]+>/','',$v,-1,$count);    if($count>2) $arr[]=join('+',preg_split("/[\r\n]+/",$v,-1,PREG_SPLIT_NO_EMPTY));    else              $arr[]=trim($v);    }print_r($arr);