Setting PHP tmp dir - PHP upload not working

Question

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 nbsp MB and user will be uploading files around 10 nbsp MB   I ve searched lots of webpages  but none of solutions worked  I ve set temp directory in php ini   upload tmp dir   upload   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 nbsp 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

User · Answer

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

User · Answer

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    lt  php   echo  username        whoami    phpinfo      gt    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          gt  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           gt  mkdir  home admin tmp     gt  chown admin  home admin tmp   That is all you have to do to fix the file upload problem

User · Answer

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

User · Answer

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    Check upload tmp dir in php ini  This is directory where PHP stores temporary files while uploading  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  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  Check upload max filesize in php ini  This specifies biggest file that can be uploaded  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   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  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  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  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  If you make any changes in php ini remember to restart server so the configuration will be reloaded

User · Answer

create php-file with    lt  php     print shell exec   whoami       gt    or    lt  php echo exec  whoami      gt    try the output in your web-browser  if the output is not your user example  www-data then proceed to next step  open as root       etc apache2 envvars   look for these lines      export APACHE RUN USER user-name      export APACHE RUN GROUP group-name   example      export APACHE RUN USER www-data      export APACHE RUN GROUP www-data   where    username   your username that has access to the folder you are using group   group you ve given read write execute access  change it to      export APACHE RUN USER  username       export APACHE RUN GROUP  group    if your user have no access yet      sudo chmod 775 -R  directory of folder you want to give r w x access

User · Answer

My problem was selinux     Go sestatus  If Current mode  enforcing  Then chcon -R -t httpd sys rw content t  var www html

[php] Setting PHP tmp dir - PHP upload not working

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