정규표현식 한글 표현 방법

[가-힣]+

[\uac00-\ud79f]+

([\xb0-\xc8][\xa1-\xfe])+

([\xEA-\xED][\x80-\xBF])+

PCRE 한글

preg_match_all('/[\x{1100}-\x{11FF}\x{3130}-\x{318F}\x{AC00}-\x{D7AF}]+/u', $text, $matches);