[wp-trac] [WordPress Trac] #15955: move_uploaded_file mangles non-ascii characters on Windows platforms

[WordPress Trac]

#15955: move_uploaded_file mangles non-ascii characters on Windows platforms
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 Reporter:  t31os_        |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Upload        |     Version:  2.0
 Severity:  major         |  Resolution:
 Keywords:  needs-patch   |     Focuses:
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Comment (by sebastian.pisula):

 I have two problems during upload:

 1. I have filename: `FitEasy-Konkurs-Koktajle-po-obróbce-6070.jpg`. After
 upload file is saved in wp-content/uploads with invalid filename:
 `FitEasy-Konkurs-Koktajle-po-obróbce-6070-300x199.jpg`. Very important:
 this char: `ó` (ASCII: 111) not is a polish `ó` (ASCII: 195).

 2. So problem is with filename with polish chars:
 `ĘÓĄŚŁŻŹĆŃęóąśłżźćń.jpg`. After upload in uploads dir I can see
 `Ä˜Ă“Ä„ĹšĹĹ»ĹąÄ†ĹƒÄ™ĂłÄ…Ĺ›Ĺ‚ĹĽĹşÄ‡Ĺ„.jpg`. So I cant see preview because
 this can't find file in serwer.

 Problem is in Windows 10, PHP Version 5.5.9, Apache/2.4.7 (Win32)
 OpenSSL/1.0.1e PHP/5.5.9

 If I use `Filenames to latin` plugin second problem not exists but exists
 first problem.

 I think that WordPress should take care that uploaded filenames should be
 valid without use other plugins. I think that this is important error with
 upload.

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Ticket URL: <https://core.trac.wordpress.org/ticket/15955#comment:38>
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