((INSTR(wr_subject, '먼치킨') or INSTR(wr_content, '먼치킨') or 1=0))////////////////////

으로 나옵니다!

<form name="fsearch" onsubmit="return fsearch_submit(this);" method="get">
<input type="hidden" name="srows" value="<?php echo $srows ?>">
<input type="hidden" name="sfl" value="wr_subject||wr_content||ca_name">
<fieldset id="sch_res_detail">
    <label for="sfl" class="sound_only">검색조건</label>
    <select name="sfl" id="sfl">
        <option value="wr_subject||wr_content"<?php echo get_selected($sfl, "wr_subject||wr_content") ?>>제목+내용</option>
        <option value="wr_subject"<?php echo get_selected($sfl, "wr_subject") ?>>제목</option>
        <option value="wr_content"<?php echo get_selected($sfl, "wr_content") ?>>내용</option>
        <option value="wr_name"<?php echo get_selected($sfl, "wr_name") ?>>이름</option>
    </select>

    <label for="stx" class="sound_only">검색어<strong class="sound_only"> 필수</strong></label>
    <span class="sch_wr">
        <input type="text" name="stx" value="<?php echo $text_stx ?>" id="stx" required size="50">
        <button type="submit" class="btn_submit">검색</button>
    </span>

bbs/search.php 수정
              case 'ca_name' : <---- 추가
                case 'wr_subject' :
                case 'wr_content' :

대박 ㅠㅠㅠㅠㅠ 잘 검색됩니다!! 감사합니당!!!bbbb