$prev_href,$next_href 는 어느 파일에 정의되어있나요?? 채택완료

bbs/view.php

// 이전글 링크 $prev_href = ''; if (isset($prev['wr_id']) && $prev['wr_id']) {     $prev_wr_subject = get_text(cut_str($prev['wr_subject'], 255));     $prev_href = './board.php?bo_table='.$bo_table.'&wr_id='.$prev['wr_id'].$qstr;     $prev_wr_date = $prev['wr_datetime']; }

// 다음글 링크 $next_href = ''; if (isset($next['wr_id']) && $next['wr_id']) {     $next_wr_subject = get_text(cut_str($next['wr_subject'], 255));     $next_href = './board.php?bo_table='.$bo_table.'&wr_id='.$next['wr_id'].$qstr;     $next_wr_date = $next['wr_datetime']; }