Retain full path of files for directory uploads

[bjoern-tantau]

To fix https://bugs.php.net/bug.php?id=77372 and improve support of <input type="file" name="files" multiple webkitdirectory> I introduced another item to the $_FILES array called fullpath, containing the full filename, as supplied by the user-agent.

[nikic]

This looks reasonable to me. Main thing this needs is a rebase to drop the changes that are already on master, and a dedicated test for the new functionality. You've already updated plenty of tests that can serve as a template -- the POST_RAW section for a new test should be based on capturing what the browser actually sends in the multiple webkitdirectory case.

As a bit of bikeshed, should this be full_path rather than fullpath (in line with tmp_name)?

@cmb69 As you commented on the bug report, any opinion on this?

[cmb69]

Adding a new array member is fine for me. There is still the issue that IE provides the full path for single files, but that isn't a PHP issue when using a new member, and apparently can be disabled anyway. Besides that IE users likely have more serious issues.

[bjoern-tantau]

This looks reasonable to me. Main thing this needs is a rebase to drop the changes that are already on master, and a dedicated test for the new functionality. You've already updated plenty of tests that can serve as a template -- the POST_RAW section for a new test should be based on capturing what the browser actually sends in the multiple webkitdirectory case.

As a bit of bikeshed, should this be full_path rather than fullpath (in line with tmp_name)?

Done. I've renamed it to full_path (and updated MAX_SIZE_OF_INDEX), added a test and rebased on master.