Can't write to /tmp with php, despite 777 permissions and no open_basedir value

Question

I'm trying to write a file to my /tmp directory (on an apache server) with the php fopen function, but it fails: ``` <?php $handle = fopen("/tmp/test.txt", "x"); if ($handle) echo "Success!"; else print_r(error_get_last()); ``` This returns the error message: failed to open stream: No such file or directory. The `/tmp` directory has permissions set to `drwxrwxrwt` and I can see that the web user is writing other files to it. Mysteriously, if I point the script to another folder with permissions `777`, it returns success. But my `open_basedir` has no value. I have `safe_mode=on` and `allow_url_fopen=off`, but I don't think that should explain it? This is PHP 5.3.10 on Apache Httpd 2.0.

Accepted Answer

I had exactly the same problem. PHP reported no problem with opening file in `/tmp/myoutputfile`, but no file was in that path. Then I did

```
find / -name "myoutputfile"
```

and found it in `/tmp/systemd-…/myoutputfile`. I've found this article on Google. So, in my case, it was a Systemd and Apache Httpd combination. I hope this will help to someone.

Can't write to /tmp with php, despite 777 permissions and no open_basedir value

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