문자열 자르기 함수에 대해 궁금하네요. 채택완료

//글자 수 자르기function cut_str($str, $len, $suffix="…"){         $arr_str = preg_split("//u", $str, -1, PREG_SPLIT_NO_EMPTY);         $str_len = count($arr_str);          if ($str_len >= $len) {                 $slice_str = array_slice($arr_str, 0, $len);                 $str = join("", $slice_str);                  return $str . ($str_len > $len ? $suffix : '');         } else {                 $str = join("", $arr_str);                 return $str;         }} // UTF-8 문자열 자르기// 출처 : <A HREF="https://www.google.co.kr/search?q=utf8_strcut&aq=f&oq=utf8_strcut&aqs=chrome.0.57j0l3.826j0&sourceid=chrome&ie=UTF-8" TARGET="_blank">https://www.google.co.kr/search?q=utf8_strcut&aq=f&oq=utf8_strcut&aqs=chrome.0.57j0l3.826j0&sourceid=chrome&ie=UTF-8</A>function utf8_strcut( $str, $size, $suffix='...' ){                 $substr = substr( $str, 0, $size * 2 );                 $multi_size = preg_match_all( '/[x80-xff]/', $substr, $multi_chars );                  if ( $multi_size > 0 )                         $size = $size + intval( $multi_size / 3 ) - 1;                  if ( strlen( $str ) > $size ) {						 $str = substr( $str, 0, $size );                         $str = preg_replace( '/(([x80-xff]{3})*?)([x80-xff]{0,2})$/', '$1', $str );                         $str .= $suffix;                 }                  return $str;}