<div id="tabs-1" class="ui-tabs-panel ui-widget-content ui-corner-bottom">
     <div>fsadfasdfasdf</div>
     <table width="460" cellspacing="0" border="0">
                                    <tbody><tr>
                                        <td>
                                            &nbsp;
                                            
                                        </td>
                                        <td>
                                            &nbsp;
                                        </td>
                                        <td>
                                            &nbsp;
                                            
                                        </td>
                                    </tr>
                                </tbody></table>
 </div>
               preg_match_all("/<div id=\"tabs-1\" class=\"ui-tabs-panel ui-widget-content ui-corner-bottom\">(.*?)<\/div>/is",$info,$ar);
print_r($ar);  
我想匹配出      <div id="tabs-1" class="ui-tabs-panel ui-widget-content ui-corner-bottom">开始
</div>
结束的所有内容。匹配不到     Array
(
    [0] => Array
        (
        )    [1] => Array
        (
        ))请问是什么原因呢。