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<?php var_dump( mb_encode_mimeheader( mb_convert_encoding( "あいうえおかきくけこさしすせそたちつてとなにぬねのはひふへほまみむめもやいゆえよらりるれろわゐうゑをん", "ISO-2022-JP", "UTF-8" ), "ISO-2022-JP" ) );
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