zip_encoding.php

<?php

function fixFilenameEncoding($filename) {
	return mb_convert_encoding($filename, 'ISO-8859-2', 'UTF-8');
}

$zip = new ZipArchive;
$res = $zip->open('./elephant.zip', ZipArchive::CREATE);
if ($res === true) {
	$filename = 'éléphant-man2.txt';
	$zip->addFromString(fixFilenameEncoding($filename), 'file content goes here');
	$zip->close();
	echo '<a href="elephant.zip">ok</a>';
} else {
	echo 'failed';
}

The probleme with this code, is that when opening / extracting the archive with a Zip client the "éléphant-man2.txt" file has an incorrectly encoded name "éléphant-man.txt".

Without the fixFilenameEncoding() the archive content is broken on Ubuntu/OSX and Windows.
With the fixFilenameEncoding() call, it works on Ubuntu but not on the other OSes.

Any idea about how to fix this?