Question

在将图像从临时文件夹移动到当前文件夹时遇到问题，我的图像保存在数据库中，但没有保存在指定的文件夹中。

Route path: /todos/:id
Request URL: http://localhost:xxxx/todos/36
req.params: { "id": "36" }

app.use('/todos/:id', function (req, res, next) {
  console.log('Request Id:', req.params.id);
  next();
});

Answer 1

一个问题是您引用的是temp_name而不是tmp_name，并且还试图将文件写入不一定存在的位置。

sql很容易受到sql注入的攻击-最好使用带有绑定参数的prepared statement-下面给出示例。

if( isset( $_POST['Apply'], $_POST['documentstatus'], $_FILES['pfimg'] ) ){

    if( !function_exists( 'createdir' ) ){
        /*
            recursive build folder path and set
            permissions along the path.

            ex: createdir( '/folder/folder/folder', 0755 );
        */
        function createdir( $path=NULL, $perm=0644 ) {
            if( !file_exists( $path ) ) {
                createdir( dirname( $path ) );
                mkdir( $path, $perm, true );
                clearstatcache();
            }
        }
    }

    $leave = $_POST['documentstatus'];
    $documentstatus = "Pending";
    $filename=$_FILES["pfimg"]["name"];
    $tempname=$_FILES["pfimg"]["tmp_name"]; #   <---- tmp_name not temp_name

    $folder = rand( 222,333333 );
    $path = sprintf( '/student/%s', $folder );
    $target = sprintf( '%s/%s', $path, $filename );

    /* 
        as pointed out, create the folder structure 
        before attempting to write a file to it
    */
    createdir( $path );

    $status = move_uploaded_file( $tempname, $target );

    $sql='insert into `documentdetails` values (null,?,?,?,?)';
    $stmt=$db->prepare( $sql );

    if( !$stmt )exit('Bad foo!');
    $stmt->bind_param('ssss',$empid,$leave,$target,$documentstatus);
    $result=$stmt->execute();
    /* better to do redirection in php but might cause `headers already sent errors` depending upon how this is called */
    header('Location: documentupload.php');
}

Answer 2

使用x = np.empty(1) x[0] = 0.4 f = np.array([3,2,1,0,1,2,3]) y = np.empty(0) for i in range(len(f)): if f[i+1] < f[i]: newx = x[i]*2 y = np.append(y,f[i+1]) x = np.append(x,newx) elif f[i+1]>f[i] and f[i]==0: newx = x[i] * 2 y = np.append(y, f[i + 1]) x = np.append(x, newx) else: break

之前，您必须创建目录

move_uploaded_file()

将一个文件移到其他位置时遇到问题

2 个答案: