关于删除文件的绝对路径有关问题 求指点

关于删除文件的绝对路径问题 求指点

PHP code

<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->  delete_files.php$dir = "uploadfiles";//设置文件保存目录 注意包含/   $id=$_GET['delete'];    $conn=mysql_connect('localhost','root','');    $flag=mysql_select_db('laborder' ,$conn);    mysql_query("set names utf8");    $sql="select * from files where files_id='$id'";    $sqlupdate="delete from student where student_id='$id'";     $result=mysql_query($sql,$conn);         if($lists=mysql_fetch_array($result))         { $name=$lists['files_name'];           $a=dirname(__FILE__);           $i=unlink($a/$dir/$name);                  if(mysql_query($sqlupdate)&&$i)                  {                                                echo" <script type="text/javascript">"                      ."txtOption='删除成功!';".                      "alert(txtOption);";                       echo "</script>";                         echo "<script>window.location.href='admin_files.php';</script>";                                         }         }

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PHP code

$xxx = "{$a}/{$dir}/{$name}";echo $xxx;unlink($xxx);<br><font color="#e78608">------解决方案--------------------</font><br>路径要对，权限要有，必须是个文件<br><font color="#e78608">------解决方案--------------------</font><br>

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E:\work\wamp\www\test5/uploadfiles/SOBEL算子.doc}
按照3楼的更改居然有这个警告