How to fix PHP upload file inherit permissions error using Windows IIS Server

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If you’re like me, and you use Windows IIS, you’ve spent hours trying to figure out why your uploaded file won’t inherit the permissions needed to display correctly.  Luckily, the answer is extremely easy and something most people would have never thought of.

The problem only happens when you use PHP to upload a file.  When you upload a file, PHP sends the file to a temporary directory on the hard drive (for me it is C:\Windows\Temp) and then copies it over to it’s intended directory.  Once the file has landed in the temporary directory, it is assigned the permissions of that directory. The problem is when Windows copies that file, it keeps the temporary directory’s permissions and doesn’t inherit your web directory’s permissions.

The easiest way to fix this problem is to add to the temporary directory

your intended web directory’s permissions.  There’s no need to erase the permissions already in the temporary directory, just add the web directory’s permissions to them. In other words, follow these steps

  1. To change the permissions of your temporary upload directory, find the “upload_tmp_dir” in your php.ini file.
  2. Set it to the directory of your choosing (outside your web folders of course) or leave it at default (for me it is C:\Windows\Temp).
  3. Browse to this folder and add the permissions of your web folders to it.

That’s it!  As you can see, its really simple and just a little trick the guys at PHP forgot to tell us.

And just so you know, if the two folders were on separate drives, you wouldn’t have this problem, and thus wouldn’t be reading this.

Source: www.howyoudo.info

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