Online PHP editor | output for OUFRn

<?php $str = mb_convert_encoding("ｱ", 'JIS', 'UTF-8'); var_dump(mb_detect_encoding($str, 'JIS')); var_dump(mb_detect_encoding($str, 'JIS', true)); var_dump(mb_detect_encoding($str, 'JIS', false)); var_dump(mb_detect_encoding($str, 'ASCII')); var_dump(mb_detect_encoding($str, 'ASCII', true)); var_dump(mb_detect_encoding($str, 'ASCII', false)); var_dump(mb_detect_encoding($str, ['ASCII', 'JIS'])); var_dump(mb_detect_encoding($str, ['ASCII', 'JIS'], true)); var_dump(mb_detect_encoding($str, ['ASCII', 'JIS'], false));