<p>How to post a username, password and multiple binary files from a single html form and process it using php? I'm not allowed to use ajax.</p>

You should use the
```
$_FILES
```
superglobal and
```
move_uploaded_file()
```
function to see which files were uploaded successfully and move them to their final location in case they were.
The
```
$_POST
```
superglobal will contain the submitted username and password.