PHP - 文件上传，['tmp_name'] 物理上不存在

Question

这是一些非常基本的东西。 由于未知原因，我无法通过标准 HTML+PHP 上传表单上传文件。

文件在本地/tmp下不存在

php.ini

;;;;;;;;;;;;;;;;
; File Uploads ;
;;;;;;;;;;;;;;;;

; Whether to allow HTTP file uploads.
; http://php.net/file-uploads
file_uploads = On

; Temporary directory for HTTP uploaded files (will use system default if not
; specified).
; http://php.net/upload-tmp-dir
upload_tmp_dir = /tmp/

; Maximum allowed size for uploaded files.
; http://php.net/upload-max-filesize
upload_max_filesize = 30M

; Maximum number of files that can be uploaded via a single request
max_file_uploads = 20

; open_basedir, if set, limits all file operations to the defined directory
; and below.  This directive makes most sense if used in a per-directory
; or per-virtualhost web server configuration file. This directive is
; *NOT* affected by whether Safe Mode is turned On or Off.
; http://php.net/open-basedir
open_basedir = /srv/http/:/home/:/tmp/:/usr/share/pear/:/usr/share/webapps/

; Maximum size of POST data that PHP will accept.
; Its value may be 0 to disable the limit. It is ignored if POST data reading
; is disabled through enable_post_data_reading.
; http://php.net/post-max-size
post_max_size = 8M

上传代码（与html表单位于同一文件，index.php）

print '<pre>';
print var_dump($_FILES);
print var_dump(is_uploaded_file($_FILES["file"]["tmp_name"]));
print is_writable('/tmp');
print '</pre>';

html

<form method="post" action="./" enctype="multipart/form-data">
    <label for="file">Filename:</label>
    <input type="file" name="file" id="file"><br>
    <input type="submit" name="submit" value="Submit">
</form>

我的输出是：

array(1) {
  ["file"]=>
  array(5) {
    ["name"]=>
    string(11) "test.jpg"
    ["type"]=>
    string(10) "image/jpeg"
    ["tmp_name"]=>
    string(14) "/tmp/php66JkW8"
    ["error"]=>
    int(0)
    ["size"]=>
    int(75766)
  }
}
bool(true)
1

文件的权限和信息：

[torxed@archie http]$ ls -l / | grep tmp
drwxrwxrwt   9 root root   220 Sep 26 13:34 tmp

[torxed@archie http]$ ls -lh /home/torxed/ | grep test
-rw-r--r--  1 torxed users  74K Sep 26 13:08 test.jpg

Answer 1

自己解决了。 尽管问题很愚蠢，但答案更愚蠢。

[torxed@archie http]$ ls -lh /srv/http | grep tmp
drwxr-xr-x 2 torxed root 4.0K Sep 26 14:10 tmp

我认为该文件在 /tmp 下的存在时间足以让我目睹它被创建，这首先是愚蠢的。

但尝试使用 move_uploaded_file 时，在尝试将其移动到 ./ 时返回了 false 原因是文件夹权限错误。

move_uploaded_file($src, '/srv/http' + $src); 只需将其移动到另一个临时位置即可（在修复 /srv/http/tmp 的写入权限后）

Answer 2

您是否将 post_max_size 值设置为更高的值？

Answer 3

var_dump(is_uploaded_file($_FILES["file"]["tmp_name"]));