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.
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.
I’ve searched lots of webpages, but none of solutions worked.
I’ve set temp directory in
I’ve set permissions to the
/upload dir, and apache is owner of the file, so the directory is definitely writable by PHP.
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.
Oh, and the last information:
open_basedir isn’t set, so the PHP access to disk is only limited by file permissions.
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.
upload_tmp_dirin php.ini. This is directory where PHP stores temporary files while uploading.
open_basedirin php.ini. If defined it limits PHP read/write rights to specified path and its subdirectories. Ensure that
upload_tmp_diris inside this path.
post_max_sizein 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.
upload_max_filesizein php.ini. This specifies biggest file that can be uploaded.
memory_limitin 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).
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 (
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
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.
If you make any changes in php.ini remember to restart server so the configuration will be reloaded.
I struggled with this issue for a long time…
My solution was to modify the php.ini file, in the folder that contained the php script. This was important, as modifying the php.ini at the root did not resolve the problem (I have a php.ini in each folder for granular control).
The relevant entries in my php.ini looked like this…. (the output_buffering is not likely needed for this issue)
output_buffering = On upload_max_filesize = 20M post_max_size = 21M
create php-file with:
<?php print shell_exec( 'whoami' ); ?>
<?php echo exec('whoami'); ?>
try the output in your web-browser.
if the output is not your user example:
then proceed to next step
open as root:
look for these lines:
username = your username that has access to the folder you are using
group = group you’ve given read+write+execute access
change it to:
if your user have no access yet:
sudo chmod 775 -R “directory of folder you want to give r/w/x access”
My problem was selinux…
Current mode: enforcing
chcon -R -t httpd_sys_rw_content_t /var/www/html
I was also facing the same issue for 2 days but now finally it is working.
Step 1 : create a php script file with this content.
<?php echo 'username : ' . `whoami`; phpinfo(); ?>
note down the username.
note down open_basedir under core section of phpinfo.
also note down upload_tmp_dir under core section of phpinfo.
Here two things are important ,
see if upload_tmp_dir value is inside one of open_basedir directory.
( php can not upload files outside open_basedir directory ).
Step 2 : Open terminal with root access and go to upload_tmp_dir location.
( In my case “/home/admin/tmp”. )
=> cd /home/admin/tmp
But it was not found in my case so I created it and added chown for php user which I get in step 1 ( In my case “admin” ).
=> mkdir /home/admin/tmp => chown admin /home/admin/tmp
That is all you have to do to fix the file upload problem.
In my case, it was the open_basedir which was defined. I commented it out (default) and my issue was resolved. I can now set the upload directory anywhere.