php 数据库图片信息及文件夹下的图片删除(2)

                        <?php 
                        /**
                         * 图片管理
                         * 2011/8/20
                         * kcjs
                         **/ 
                        require "../conn/conn.php"; 
                        if($_GET["del"]){                   //删除图片信息及文件夹下的图片(注意不要犯逻辑性的错误，当然可以分开写这两个的删除)  
                            $id=$_GET["del"]; 
                            $sql2="select*from pic where id=".$id; 
                            $rst2=mysql_query($sql2); 
                            $row=mysql_fetch_array($rst2);  
                            $sql="delete from pic where id=".$id; 
                            mysql_query($sql); 
                            $filename=$row['picpath']; 
                            if(file_exists($filename)){