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<?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));
Output for git.master, git.master_jit, rfc.property-hooks
string(3) "JIS" string(3) "JIS" string(3) "JIS" string(5) "ASCII" string(5) "ASCII" string(5) "ASCII" string(3) "JIS" string(3) "JIS" string(3) "JIS"

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