使用crul抓取内容的时候。

使用crul抓取内容的时候。我发现如果截取的内容少。能正常输入。一旦截取的内容多。就只显示Array（）；了。。这是为什么。。还有就是我要抓取的是表格。中的某一项。没特征。。求思路~~~

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<html>
<head>
<title></title>
<link href="/css/newcss/project.css" rel="stylesheet" type="text/css">
</head>
<body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0" style="overflow:auto;">
<form name="form" method="post">
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr><td class="Linetop"></td>
</tr>
</table>
<table width="100%"  border="0" cellpadding="0" cellspacing="0" class="title" id="tblHead">
<tr>
<td width="80%" >
<table border="0" align="left" cellpadding="0" cellspacing="0" >

<tr>
<td> </td>
<td valign="middle"> <b>本学期成绩查询列表</b>
 </td>
</tr>
</table>
</td>
<td width="20%" >
<table border="0" align="left" cellpadding="0" cellspacing="0" width="100%" >

<tr>
<td> </td>
<td width="5"></td>
</tr>
</table>
</td>
</tr>
</table>
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr><td class="Linetop"></td>
</tr>
</table>
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="titleTop2">
<tr>
  <td class="pageAlign">
   <table cellpadding="0" width="100%" class="displayTag" cellspacing="1" border="0" id="user">
    <thead>
<tr>
<th align="center" width="10%" class="sortable">
课程号
</th>
<th align="center" width="10%" class="sortable">
课序号
</th>
<th align="center" width="20%" class="sortable">
课程名
</th>
<th align="center" width="20%" class="sortable">
英文课程名
</th>
<th align="center" width="10%" class="sortable">
学分
</th>
<th align="center" width="10%" class="sortable">
课程属性
</th>
<th align="center" width="10%" class="sortable">成绩
</th>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00002473
</td>
<td align="center">
26
</td>
<td align="center">
形势与政策(六)
</td>
<td align="center">
Situation and Policy （Ⅵ）
</td>
<td align="center">
0
</td>
<td align="center">
综合必修
</td>
<td align="center">

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00002435
</td>
<td align="center">
09
</td>
<td align="center">
文献检索与利用A
</td>
<td align="center">
Literature Retrieval and Utilization A
</td>
<td align="center">
2
</td>
<td align="center">
综合必修
</td>
<td align="center">

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00000406
</td>
<td align="center">
09
</td>
<td align="center">
软件工程导论
</td>
<td align="center">
Introduction to Software Engineering
</td>
<td align="center">
3
</td>
<td align="center">
专业必修
</td>
<td align="center">

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00001017
</td>
<td align="center">
01
</td>
<td align="center">
软件代码开发技术
</td>
<td align="center">
Development Technology for Software Coding
</td>
<td align="center">
2.5
</td>
<td align="center">
专业选修
</td>
<td align="center">

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00000995
</td>
<td align="center">
01
</td>
<td align="center">
编译原理A
</td>
<td align="center">
The Principle of Compiler A
</td>
<td align="center">
3
</td>
<td align="center">
专业选修
</td>
<td align="center">

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00000998
</td>
<td align="center">
02
</td>
<td align="center">
大型数据库系统
</td>
<td align="center">
Oracle database system
</td>
<td align="center">
2.5
</td>
<td align="center">
学科选修
</td>
<td align="center">

88

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
SJ000195
</td>
<td align="center">
07
</td>
<td align="center">
综合实训(二)
</td>
<td align="center">
Comprehensive Practical Training（Ⅱ）
</td>
<td align="center">
2
</td>
<td align="center">
实践环节
</td>
<td align="center">

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00005054
</td>
<td align="center">
02
</td>
<td align="center">
信息安全技术B
</td>
<td align="center">
Information Security Technology B
</td>
<td align="center">
2.5
</td>
<td align="center">

</td>
<td align="center">

    </td>
</tr>

<tr class="odd" onMouseOut="this.className='even';" onMouseOver="this.className='evenfocus';">
<td align="center">
00004773
</td>
<td align="center">
01
</td>
<td align="center">
软件项目管理B
</td>
<td align="center">
Project Managenent for Software B
</td>
<td align="center">
2.5
</td>
<td align="center">

</td>
<td align="center">

    </td>
</tr>

</TABLE>
<div align="right">
<table width="100%" border="0" cellpadding="0" cellspacing="0" ><tr><td align="right">共9项  第1/1页  <img title="第一页" src="/img/icon/noDownDM2.gif"style="vertical-align:center;" width="11" height="11" /> <img title="前一页" src="/img/icon/noDownDM_2.gif"style="vertical-align:center;" width="11" height="11" /><img title="下一页" src="/img/icon/noUpDM_2.gif"style="vertical-align:center;" width="11" height="11" /> <img title="最后一页" src="/img/icon/noUpDM2.gif"style="vertical-align:center;" width="11" height="11" />  每页显示的记录数 <select name="pageSize" onchange="pageSizeChange()"><option value="10" >10项</option><option value="20" selected='selected'>20项</option><option value="30" >30项</option><option value="40" >40项</option><option value="50" >50项</option><option value="100" >100项</option><option value="200" >200项</option><option value="300" >300项</option></select><input   name="page"   type="hidden"   id="page" value="1"> <input   name="currentPage"   type="hidden"   id="currentPage" value="1"> <input   name="pageNo"   type="text"   id="pageNo"   size="3"   onKeyPress="return   handleEnterOnPageNo();"> <img src="/img/icon/go.gif"  name="goto"  id="goto" style="cursor:hand;" title="跳转到" onClick="forward();"><script   type   =   'text/javaScript'>
function   forward(){     if(!(/^([1-9])(\d{0,})(\d{0,})$/.test(document.all.pageNo.value))){         alert("请输入合法的页号！");         document.all.pageNo.focus();         return false;     }     if(document.all.pageNo.value>1     ){     alert("输入的页数超过了总页数，请重新输入！");         document.all.pageNo.focus();         return false;     }         window.location.href="/bxqcjcxAction.do?totalrows=9&page="+   document.all.pageNo.value +"&pageSize="+document.all.pageSize.value;}function   handleEnterOnPageNo(){     if(event.keyCode   ==   13)     {         forward();         return   false;     }     return   true;}function pageSizeChange(){ window.location.href="/bxqcjcxAction.do?totalrows=9&pageSize="+document.all.pageSize.value;}function pagination(value){ window.location.href="/bxqcjcxAction.do?totalrows=9&page="+value+"&pageSize="+document.all.pageSize.value;}</script></td></tr></table>
</div>
</form>
</body>
</html>
$s=你的串
preg_match_all('#<tr class="odd" onMouseOut="this.className=\'even\';" onMouseOver="this.className=\'evenfocus\';">\s*<td align="center">.+</td>\s*<td align="center">.+</td>\s*<td align="center">(.+)</td>.+<td align="center">([^<]+)</td>\s*</tr>#isU',$s,$m);
print_r($m);  // $m[1] 为名字数组，$m[2] 为分数数组