function substr8($str, $start, $len=NULL) { if( $len == NULL ) $len = mb_strlen($str, 'UTF-8')-$start; return mb_substr($str, $start, $len, 'UTF-8'); } echo substr8('안녕하세요', -3); // 하세요 echo substr8('안녕하세요', 1, 2); // 녕하
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