将文件上传到用户文件夹

我正尝试在上传文件夹内创建一个新文件夹，以便用户可以将文件上传到自己的文件夹。我可以使用PHP来做到这一点，或者我需要在MYSQL中使用“LONGBLOB”列吗？我读过，这不是好的做法，以存储图像在你的数据库将文件上传到用户文件夹

<?php 
header('Content-Type: application/json'); 

$succeeded = []; 
$failed =[]; 
$uploaded = []; 
$allowed = ['png', 'gif', 'jpg']; 

if(!empty($_FILES["file"])) { 

    foreach ($_FILES['file']['name'] as $key => $name) { 
     if ($_FILES['file']['error'][$key] === 0) { 

      $temp = $_FILES['file']['tmp_name'][$key]; 

      $ext = explode('.', $name); 

      $ext = strtolower(end($ext)); 

      $file = md5_file($temp) . time() . '.' . $ext; 

      if (in_array($ext, $allowed) === true && move_uploaded_file($temp, "uploads/{$file}") === true) { 
       $succeeded[] = array(
           'name' => $name, 
           'file' => $file 
           ); 

      }else{ 
       $failed[] = array(
        'name' => $name); 
      } 
     } 
    } 


} 

if (!empty($_POST['ajax'])) { 
    echo json_encode(array(
     'succeeded' => $succeeded, 
     'failed' => $failed)); 
} 



?>

来源

2016-07-24 Alan

您可以使用PHP轻松地为每个用户创建一个文件夹，比分贝更好的办法 - 或许是存储在数据库中的文件和某种散列在下载链接或者用一个参考。实际上，将图像作为BLOBS存储在数据库中会使其增长到可能的巨大尺寸 – RamRaider

假设你有用户的用户名或ID在会话变量则可以用来为基础的新文件夹进他/她会上传文件。显然，当他们希望下载文件时，必须使用相同的用户名，id。通过存储哈希和文件路径，您可以生成不会显示文件名，文件夹路径，所有者等的链接，因为数据库可以检查灰并在需要时返回文件和路径。

以下是生成用户自己的文件夹并在上传过程中使用它的未经测试的示例 - 希望它能给您一些想法/指导。

<?php 


    $succeeded = []; 
    $failed =[]; 
    $uploaded = []; 
    $allowed = ['png', 'gif', 'jpg']; 


    /* 
     generate a suitable name for the new folder, 
     remove characters which might be troublesome 
    */ 
    $userdir = str_replace( 
     array("'",'"','-'), 
     array('','','_'), 
     $_SESSION['username'] 
    ); 



    /* 
     new path into which the files are saved 
     It might be better to have the files 
     stored outside of the document root. 
    */ 
    $savepath = 'uploads/' . $userdir; 



    /* create the folder if it does not exist */ 
    if(!file_exists($savepath)) { 
     mkdir($savepath); 
     chown($savepath, $username); 
     chmod($savepath, 0644); 
    } 



    if(!empty($_FILES["file"])) { 

     foreach($_FILES['file']['name'] as $key => $name) { 
      if($_FILES['file']['error'][$key] === 0) { 

       $temp = $_FILES['file']['tmp_name'][$key]; 

       /* 
        is there anything to be gained by hashing the filename? 
        the hash would be the same for filenames with the same 
        name anyway. 

        If the file is large, calculating the hash of the file could 
        take some time... 
       */ 
       $ext = explode('.', $name); 
       $ext = strtolower(end($ext)); 
       $file = md5_file($temp) . time() . '.' . $ext; 


       /* generate a random hash to use in downloads */ 
       $hash=uniqid(md5(date(DATE_COOKIE))); 


       /* here probably - store reference in db? Assign permissions based upon owner etc */ 
       $sql='insert into `table` (`filename`,`username`,`uid`,`datetime`,`hash`) values (?,?,?,?,?);';    

       /* bind params and execute - not shown */ 



       if (in_array($ext, $allowed) === true && move_uploaded_file($temp, "{$savepath}/{$file}") === true) { 
        $succeeded[] = array('name' => $name, 'file' => $file); 
       }else{ 
        $failed[] = array('name' => $name); 
       } 
      } 
     } 
    } 

    if (!empty($_POST['ajax'])) { 

     header('Content-Type: application/json'); 
     echo json_encode(array(
      'succeeded' => $succeeded, 
      'failed' => $failed)); 
    } else { 

     header('HTTP/1.1 404 Not Found', true, 404); 
    } 
?>

来源

2016-07-24 09:48:04 RamRaider

将文件上传到用户文件夹

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