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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" ) );
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.6
string(204) "=?ISO-2022-JP?B?GyRCJCIkJCQmJCgkKiQrJC0kLyQxJDMkNSQ3JDkkOyQ9JD8kQSREJEYk?= =?ISO-2022-JP?B?SCRKJEskTCRNJE4kTyRSJFUkWCRbJF4kXyRgJGEkYiRkJCQkZiQoJGgk?= =?ISO-2022-JP?B?aSRqJGskbCRtJG8kcCQmJHEkciRzGyhC?="
preferences:
62.78 ms | 1140 KiB | 4 Q