note 102600 rejected from function.ucwords by danbrown

Note Submitter: allan dot bahia at gmail dot com 

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I found a problem with ucwords function.

$nome = 'RITA DE CÁSSIA';
$nome = ucwords(strtolower($nome)); 

// RETURNS: Rita de CÁssia

// the returns should be: Rita de Cássia

Anybody can help ?

Thanks!