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我一次上传 5 个文件。它上传成功，但是当我想更新一些特定文件（如文件 1 和文件 2）时，其他文件不应更改，它必须保持原样..但在我的情况下它变为空白..这是我的代码 

if(isset($_REQUEST['update']))
{
    $img1 = $_FILES['file_img1']['name'];
        $fileElementName = 'file_img1';
        $path = 'upload/'; 
        $location = $path . $_FILES['file_img1']['name']; 
        move_uploaded_file($_FILES['file_img1']['tmp_name'], $location); 

    $img2 = $_FILES['file_img2']['name'];
        $fileElementName = 'file_img2';
        $path = 'upload/'; 
        $location = $path . $_FILES['file_img2']['name']; 
        move_uploaded_file($_FILES['file_img2']['tmp_name'], $location); 

    $img3 = $_FILES['file_img3']['name'];
        $fileElementName = 'file_img3';
        $path = 'upload/'; 
        $location = $path . $_FILES['file_img3']['name']; 
        move_uploaded_file($_FILES['file_img3']['tmp_name'], $location); 

    $img4 = $_FILES['file_img4']['name'];
        $fileElementName = 'file_img4';
        $path = 'upload/'; 
        $location = $path . $_FILES['file_img4']['name']; 
        move_uploaded_file($_FILES['file_img4']['tmp_name'], $location); 

    $img5 = $_FILES['file_img5']['name'];
        $fileElementName = 'file_img5';
        $path = 'upload/'; 
        $location = $path . $_FILES['file_img5']['name']; 
        move_uploaded_file($_FILES['file_img5']['tmp_name'], $location); 

$sel="update tbl_job_schedule set
            file1='$img1',
            file2='$img2',
            file3='$img3',
            file4='$img4',
            file5='$img5',
            status='schwork',
            user_cmntdate=now(),
            cmnt='".$_REQUEST['addcmnt']."' where clientname='".$rw['clientname']."' and username='".$_SESSION['user']."' and jobdate='".$_SESSION['strmonth']."-".$_REQUEST['dt']."-".$_SESSION['yy']."'";
            mysql_query($sel) or die($sel);
    }
4

2 回答 2

0

放置检查文件的条件是否存在 

     if(isset($_REQUEST['update']))
   {
      if($_FILES['file_img1']['name']!=""){
    $img1 = $_FILES['file_img1']['name'];
    $fileElementName = 'file_img1';
    $path = 'upload/'; 
    $location = $path . $_FILES['file_img1']['name']; 
    move_uploaded_file($_FILES['file_img1']['tmp_name'], $location); 
         $str.='file1="$img1",';
           }
      .......

       $sel="update tbl_job_schedule set
               ".$str."
        status='schwork',
        user_cmntdate=now(),
        cmnt='".$_REQUEST['addcmnt']."' where clientname='".$rw['clientname']."' and username='".$_SESSION['user']."' and jobdate='".$_SESSION['strmonth']."-".$_REQUEST['dt']."-".$_SESSION['yy']."'";
        mysql_query($sel) or die($sel);
}
于 2013-07-05T11:14:38.647 回答
0

在更新数据库之前检查所有参数是否不为空，您将得到问题的答案。

谢谢

于 2013-07-05T11:11:47.010 回答