問題描述

我正在使用 Valums 文件上傳器通過帶有進度條的網頁上傳文件.幾乎一切正常，但我無法更改默認的 tmp 目錄，該目錄在上傳過程中存儲文件.

I'm working on file upload via a webpage with a progress bar using Valums file uploader. Almost everything works fine, but I'm not able to change the default tmp directory, where the file is stored during the upload.

文件應該存放在/upload目錄下，而不是系統默認的/tmp目錄，因為/tmp是掛載在內存盤中的其大小限制為 4MB，用戶將上傳大約 10MB 的文件.

Files should be stored in /upload directory and not in default system /tmp directory, because /tmp is mounted in a RAM disk which has its size limited to 4 MB and user will be uploading files around 10 MB.

我搜索了很多網頁，但沒有一個解決方案奏效.我在 php.ini 中設置了臨時目錄:

I've searched lots of webpages, but none of solutions worked. I've set temp directory in php.ini:

upload_tmp_dir =/upload

我已經為/upload 目錄設置了權限，并且apache 是該文件的所有者，所以該目錄肯定是PHP 可寫的.

I've set permissions to the /upload dir, and apache is owner of the file, so the directory is definitely writable by PHP.

我將文件上傳器中的目標路徑設置為/upload，因為我希望上傳后的文件也存儲在此目錄中.最終結果是小文件上傳成功，但大于 4MB 的文件上傳失敗 - 我想到的這種行為的唯一原因是文件在上傳過程中存儲在 /tmp.可以肯定的是，我已經用 sys_get_temp_dir() 檢查了它，結果是 /tmp - 所以 PHP 忽略了我的 php.ini 指令或者有一些其他的方法來設置上傳過程中文件的存儲位置.

I've set the target path in file uploader to /upload, because I want the files to be stored after the upload also in this directory. The final result is small files are being uploaded successfuly, but files larger than 4 MB fail to upload-the only reason of this behaviour that comes to my mind is that files are stored in /tmp during upload. To be sure, I've checked it with sys_get_temp_dir() and the result was /tmp-so PHP ignores my php.ini directive or there is some other way to set where files are stored during upload.

哦，還有最后一個信息:open_basedir 沒有設置，所以 PHP 對磁盤的訪問只受文件權限的限制.

Oh, and the last information: open_basedir isn't set, so the PHP access to disk is only limited by file permissions.

推薦答案

這里描述的問題我很久以前就解決了，但我真的不記得上傳不起作用的主要原因是什么.有很多事情需要修復，以便上傳可以工作.我已經創建了清單，可以幫助其他有類似問題的人，我將對其進行編輯以使其盡可能有用.之前我在聊天中說過，我是做嵌入式系統的，所以在非嵌入式系統上可能會跳過一些要點.

The problem described here was solved by me quite a long time ago but I don't really remember what was the main reason that uploads weren't working. There were multiple things that needed fixing so the upload could work. I have created checklist that might help others having similar problems and I will edit it to make it as helpful as possible. As I said before on chat, I was working on embedded system, so some points may be skipped on non-embedded systems.

• 檢查 php.ini 中的 upload_tmp_dir.這是 PHP 在上傳時存儲臨時文件的目錄.

• Check upload_tmp_dir in php.ini. This is directory where PHP stores temporary files while uploading.

檢查 php.ini 中的 open_basedir.如果定義，它將限制 PHP 對指定路徑及其子目錄的讀/寫權限.確保 upload_tmp_dir 在此路徑內.

Check open_basedir in php.ini. If defined it limits PHP read/write rights to specified path and its subdirectories. Ensure that upload_tmp_dir is inside this path.

檢查 php.ini 中的 post_max_size.如果您想上傳 20 MB 的文件，請嘗試更大一些的文件，例如 post_max_size = 21M.這定義了您在上傳過程中可能使用的 POST 消息的最大大小.

Check post_max_size in php.ini. If you want to upload 20 Mbyte files, try something a little bigger, like post_max_size = 21M. This defines largest size of POST message which you are probably using during upload.

檢查 php.ini 中的 upload_max_filesize.這指定了可以上傳的最大文件.

Check upload_max_filesize in php.ini. This specifies biggest file that can be uploaded.

檢查 php.ini 中的 memory_limit.這是腳本可能消耗的最大內存量.很明顯，它不能小于上傳大小(說實話我不太確定——PHP 可能在復制臨時文件時正在緩沖).

Check memory_limit in php.ini. That's the maximum amount of memory a script may consume. It's quite obvious that it can't be lower than upload size (to be honest I'm not quite sure about it-PHP is probably buffering while copying temporary files).

確保您正在檢查正確的 php.ini 文件，該文件是 PHP 在您的網絡服務器上使用的文件.最好的解決方案是使用此處描述的指令執行腳本 http://php.net/manual/en/function.php-ini-loaded-file.php (php_ini_loaded_file 函數)

Ensure that you're checking the right php.ini file that is one used by PHP on your webserver. The best solution is to execute script with directive described here http://php.net/manual/en/function.php-ini-loaded-file.php (php_ini_loaded_file function)

檢查用戶 php 以什么身份運行(參見此處如何操作:如何檢查 php 正在以什么用戶身份運行?).我曾在不同的發行版和服務器上工作過.有時它是apache，但有時它可以是root.無論如何，請檢查此用戶是否有權在您上傳的臨時目錄和目錄中進行讀寫.檢查路徑中的所有目錄，以防您上傳到子目錄(例如 /dir1/dir2/ - 檢查 dir1 和 dir2.

Check what user php runs as (See here how to do it: How to check what user php is running as? ). I have worked on different distros and servers. Sometimes it is apache, but sometimes it can be root. Anyway, check that this user has rights for reading and writing in the temporary directory and directory that you're uploading into. Check all directories in the path in case you're uploading into subdirectory (for example /dir1/dir2/-check both dir1 and dir2.

在嵌入式平臺上，您有時需要限制寫入根文件系統，因為它存儲在閃存卡上，這有助于延長該卡的使用壽命.如果您使用腳本來啟用/禁用文件寫入，請確保在上傳前啟用寫入.

On embedded platforms you sometimes need to restrict writing to root filesystem because it is stored on flash card and this helps to extend life of this card. If you are using scripts to enable/disable file writes, ensure that you enable writing before uploading.

我遇到了基于會話的 PHP >5.4 上傳監控的嚴重問題(如此處所述 http://phpmaster.com/tracking-upload-progress-with-php-and-javascript/ )在某些平臺上.首先嘗試一些簡單的事情(例如:http://www.dzone.com/snippets/very-simple-php-file-upload).如果可行，您可以嘗試更復雜的機制.

I had serious problems with PHP >5.4 upload monitoring based on sessions (as described here http://phpmaster.com/tracking-upload-progress-with-php-and-javascript/ ) on some platforms. Try something simple at first (like here: http://www.dzone.com/snippets/very-simple-php-file-upload ). If it works, you can try more sophisticated mechanisms.

如果您對 php.ini 進行了任何更改，請記住重新啟動服務器，以便重新加載配置.

If you make any changes in php.ini remember to restart server so the configuration will be reloaded.

這篇關于設置 PHP tmp 目錄 - PHP 上傳不起作用的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！