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I currentyl have no clue on how to sort an array which contains UTF-8 encoded strings in PHP. The array comes from a LDAP server so sorting via a database (would be no problem) is no solution. The following does not work on my windows development machine (although I'd think that this should be at least a possible solution): $array=array('Birnen', 'Äpfel', 'Ungetüme', 'Apfel', 'Ungetiere', 'Österreich'); $oldLocal=setlocale(LC_COLLATE, "0"); var_dump(setlocale(LC_COLLATE, 'German_Germany.65001')); usort($array, 'strcoll'); var_dump(setlocale(LC_COLLATE, $oldLocal)); var_dump($array); The output is: string(20) "German_Germany.65001" string(1) "C" array(6) { [0]=> string(6) "Birnen" [1]=> string(9) "Ungetiere" [2]=> string(6) "Äpfel" [3]=> string(5) "Apfel" [4]=> string(9) "Ungetüme" [5]=> string(11) "Österreich" } This is complete nonsense. Using 1252 as the codepage for setlocale() gives another output but still a plainly wrong one: string(19) "German_Germany.1252" string(1) "C" array(6) { [0]=> string(11) "Österreich" [1]=> string(6) "Äpfel" [2]=> string(5) "Apfel" [3]=> string(6) "Birnen" [4]=> string(9) "Ungetüme" [5]=> string(9) "Ungetiere" } Is there a way to sort an array with UTF-8 strings locale aware? Just noted that this seems to be PHP on Windows problem, as the same snippet with de_DE.utf8 used as locale works on a Linux machine. Nevertheless a solution for this Windows-specific problem would be nice...

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