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<?php $str = "Weiß, Goldmann, Göbel, Weiss, Göthe, Goethe und Götz"; var_dump(mb_convert_encoding($str, "ASCII"));
Output for git.master, git.master_jit, rfc.property-hooks
string(52) "Wei?, Goldmann, G?bel, Weiss, G?the, Goethe und G?tz"

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