$_FILES is not empty but move_uploaded_file returns false

问题

I have a problem. Since hours I try to get a upload script working. I also read some other questions on stackoverflow but nothing helped. The webspace allows file_upload and the size of the file is not too large. The directory where to move the downloads exists, too. My html code is:

Upload: <input type="file" name="file">

And my PHP code is:

if ($_FILES['file']['error'] == 0) {
    $tmp_name = $_FILES["file"]["tmp_name"];
    $name_file = $_FILES["file"]["name"];
    move_uploaded_file($tmp_name, "upload/" . $name_file);
}

I echoed $_FILES and the file was in there and there was no error. Everytime I try to upload the file (I also tried to upload other files and file types) move_uploaded_file returned false.

EDIT: The folder is writeable now.

回答1:

Okay, I solved my problem. I enabled error_resporting() and because any reason the permissions weren't set. Now they are 777 and I can move the files.

回答2:

Folder upload will not writable by others by setting permission 755. You may set permission atleast 666 through chmod command or better set ownership for upload folder for apache user.

I setup it On Ubuntu like that

sudo chown www-data:www-data upload

回答3:

Set the folder permissions on upload to 666. This should ensure that the directory is correctly writeable.

回答4:

Hope this may help someone.

I met the same problem, my $_FILES['file']['tmp_name'] has proper returns while move_uploaded_file($_FILES['file']['tmp_name'],$destination_dir) returns nothing. So I ran this check:

if(!is_writable($destination_dir)){ echo "error in dir"; }

and got the message "error in dir". Even my $destination_dir in move_uploaded_file has been set to 777. After spending a long time searching, I found this answer. So these two commands solved my problem:

sudo chmod -R 777 Ad_images/
sudo chcon -R -t httpd_sys_rw_content_t Ad_images/

Now the is_writable($destination_dir) returns 1 and the uploading is successful.

TL;DR: Make sure your destination directory is writable for php.

来源：https://stackoverflow.com/questions/15722153/files-is-not-empty-but-move-uploaded-file-returns-false

标签

php

file-upload