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<?php $str=base64_decode("g2+DQ4N1g4yBW4NegVuCxZbjgqaCxIKigumOcILwinmCtYLegsiC8YLE"); var_dump(mb_convert_encoding($str,'utf-8','shift-jis'));
preferences:
35.3 ms | 402 KiB | 5 Q