diff --git a/adm/config_form.php b/adm/config_form.php
index 96e64cbb2..6756b5d0b 100644
--- a/adm/config_form.php
+++ b/adm/config_form.php
@@ -27,23 +27,25 @@ if (!isset($config['cf_mobile_new_skin'])) {
 
 if(!isset($config['cf_gcaptcha_mp3'])) {
     sql_query(" ALTER TABLE `{$g4['config_table']}`
-                    ADD `cf_gcaptcha_mp3` VARCHAR(255) NOT NULL DEFAULT '' AFTER `cf_mobile_member_skin` ", TRUE);
+                    ADD `cf_gcaptcha_mp3` VARCHAR(255) NOT NULL DEFAULT '' AFTER `cf_mobile_member_skin` ", true);
 }
 
 if(!isset($config['cf_kcpcert_site_cd'])) {
     sql_query(" ALTER TABLE `{$g4['config_table']}`
-                    ADD `cf_kcpcert_site_cd` VARCHAR(255) NOT NULL DEFAULT '' AFTER `cf_memo_send_point` ", TRUE);
+                    ADD `cf_kcpcert_site_cd` VARCHAR(255) NOT NULL DEFAULT '' AFTER `cf_memo_send_point` ", true);
 }
 
 if(!isset($config['cf_kcpcert_use'])) {
     sql_query(" ALTER TABLE `{$g4['config_table']}`
-                    ADD `cf_kcpcert_use` ENUM('','test','service') NOT NULL DEFAULT '' AFTER `cf_memo_send_point` ", TRUE);
+                    ADD `cf_kcpcert_use` ENUM('','test','service') NOT NULL DEFAULT '' AFTER `cf_memo_send_point` ", true);
 }
 
+sql_query(" ALTER TABLE `{$g4['config_table']}` CHANGE `cf_kcpcert_use` `cf_kcpcert_use` ENUM('','test','service') NOT NULL DEFAULT '' ", false);
+
 if(!isset($config['cf_mobile_pages'])) {
     sql_query(" ALTER TABLE `{$g4['config_table']}`
-                    ADD `cf_mobile_pages` INT(11) NOT NULL DEFAULT '0' AFTER `cf_write_pages` ", TRUE);
-    sql_query(" UPDATE `{$g4['config_table']}` SET cf_mobile_pages = '5' ", TRUE);
+                    ADD `cf_mobile_pages` INT(11) NOT NULL DEFAULT '0' AFTER `cf_write_pages` ", true);
+    sql_query(" UPDATE `{$g4['config_table']}` SET cf_mobile_pages = '5' ", true);
 }
 
 // uniqid 테이블이 없을 경우 생성
diff --git a/bbs/register_form_update.php b/bbs/register_form_update.php
index 55fc56700..0187e8358 100644
--- a/bbs/register_form_update.php
+++ b/bbs/register_form_update.php
@@ -75,7 +75,7 @@ if ($w == '' || $w == 'u') {
     if ($w=='') {
         if ($msg = exist_mb_id($mb_id))     alert($msg);
 
-        if ($config['cf_use_recommend']) {
+        if ($config['cf_use_recommend'] && $mb_recommend) {
             if (!exist_mb_id($mb_recommend))    
                 alert("추천인이 존재하지 않습니다.");
         }
diff --git a/shop/kcp/_common.php b/shop/kcp/_common.php
index e27b34a91..bad54a5d7 100644
--- a/shop/kcp/_common.php
+++ b/shop/kcp/_common.php
@@ -1,3 +1,3 @@
-<?
-include_once("../../common.php");
+<?php
+include_once('../../common.php');
 ?>
\ No newline at end of file
diff --git a/shop/kcp/pp_ax_hub.php b/shop/kcp/pp_ax_hub.php
index 70e9fe580..381403b46 100644
--- a/shop/kcp/pp_ax_hub.php
+++ b/shop/kcp/pp_ax_hub.php
@@ -1,4 +1,4 @@
-<?
+<?php
 if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가
 
     /* ============================================================================== */
@@ -46,7 +46,7 @@ if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가
     /* ============================================================================== */
 ?>
 
-<?
+<?php
     /* ============================================================================== */
     /* =   01. 지불 요청 정보 설정                                                  = */
     /* = -------------------------------------------------------------------------- = */
diff --git a/shop/kcp/pp_ax_hub_cancel.php b/shop/kcp/pp_ax_hub_cancel.php
index 0ff97afae..252f6534e 100644
--- a/shop/kcp/pp_ax_hub_cancel.php
+++ b/shop/kcp/pp_ax_hub_cancel.php
@@ -1,4 +1,4 @@
-<?
+<?php
     if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가
 
     $def_locale = setlocale(LC_CTYPE, 0);
diff --git a/shop/kcp/pp_ax_hub_lib.php b/shop/kcp/pp_ax_hub_lib.php
index 88586d984..50cf76958 100644
--- a/shop/kcp/pp_ax_hub_lib.php
+++ b/shop/kcp/pp_ax_hub_lib.php
@@ -1,4 +1,4 @@
-<?
+<?php
   /* ============================================================================== */
   /* =   PAGE : 라이브버리 PAGE                                                   = */
   /* = -------------------------------------------------------------------------- = */
diff --git a/shop/kcp/pp_ax_hub_result.php b/shop/kcp/pp_ax_hub_result.php
index 7904d956d..7ccdbbeb2 100644
--- a/shop/kcp/pp_ax_hub_result.php
+++ b/shop/kcp/pp_ax_hub_result.php
@@ -1,4 +1,4 @@
-<?
+<?php
 if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가
 
 /* ============================================================================== */
diff --git a/shop/kcp/pp_cli_hub.php b/shop/kcp/pp_cli_hub.php
index 94930e103..7779826c0 100644
--- a/shop/kcp/pp_cli_hub.php
+++ b/shop/kcp/pp_cli_hub.php
@@ -1,4 +1,4 @@
-<?
+<?php
 include './_common.php';
 include G4_LIB_PATH.'/etc.lib.php';
 
@@ -30,7 +30,7 @@ if ($row['cnt']) {
     /* =   Copyright (c)  2007   KCP Inc.   All Rights Reserverd.                   = */
     /* ============================================================================== */
 ?>
-<?
+<?php
     /* ============================================================================== */
     /* = 라이브러리 및 사이트 정보 include                                          = */
     /* = -------------------------------------------------------------------------- = */
@@ -337,46 +337,46 @@ if ($row['cnt']) {
     </head>
     <body onload="goResult();">
     <form name="pay_info" method="post" action="./pp_cli_result.php">
-        <input type="hidden" name="req_tx"            value="<?=$req_tx?>">            <!-- 요청 구분 -->
-        <input type="hidden" name="bSucc"             value="<?=$bSucc?>">             <!-- 쇼핑몰 DB 처리 성공 여부 -->
+        <input type="hidden" name="req_tx"            value="<?php echo $req_tx; ?>">            <!-- 요청 구분 -->
+        <input type="hidden" name="bSucc"             value="<?php echo $bSucc; ?>">             <!-- 쇼핑몰 DB 처리 성공 여부 -->
 
-        <input type="hidden" name="res_cd"            value="<?=$res_cd?>">            <!-- 결과 코드 -->
-        <input type="hidden" name="res_msg"           value="<?=iconv("cp949", "utf-8", $res_msg)?>"> <!-- 결과 메세지 -->
-        <input type="hidden" name="ordr_idxx"         value="<?=$ordr_idxx?>">         <!-- 주문번호 -->
-        <input type="hidden" name="good_name"         value="<?=$good_name?>">         <!-- 상품명 -->
-        <input type="hidden" name="buyr_name"         value="<?=$buyr_name?>">         <!-- 주문자명 -->
-        <input type="hidden" name="buyr_tel1"         value="<?=$buyr_tel1?>">         <!-- 주문자 전화번호 -->
-        <input type="hidden" name="buyr_mail"         value="<?=$buyr_mail?>">         <!-- 주문자 E-mail -->
-        <input type="hidden" name="comment"           value="<?=$comment?>">           <!-- 비고 -->
+        <input type="hidden" name="res_cd"            value="<?php echo $res_cd; ?>">            <!-- 결과 코드 -->
+        <input type="hidden" name="res_msg"           value="<?php echo iconv("cp949", "utf-8", $res_msg); ?>"> <!-- 결과 메세지 -->
+        <input type="hidden" name="ordr_idxx"         value="<?php echo $ordr_idxx; ?>">         <!-- 주문번호 -->
+        <input type="hidden" name="good_name"         value="<?php echo $good_name; ?>">         <!-- 상품명 -->
+        <input type="hidden" name="buyr_name"         value="<?php echo $buyr_name; ?>">         <!-- 주문자명 -->
+        <input type="hidden" name="buyr_tel1"         value="<?php echo $buyr_tel1; ?>">         <!-- 주문자 전화번호 -->
+        <input type="hidden" name="buyr_mail"         value="<?php echo $buyr_mail; ?>">         <!-- 주문자 E-mail -->
+        <input type="hidden" name="comment"           value="<?php echo $comment; ?>">           <!-- 비고 -->
 
-        <input type="hidden" name="corp_type"         value="<?=$corp_type?>">         <!-- 사업장 구분 -->
-        <input type="hidden" name="corp_tax_type"     value="<?=$corp_tax_type?>">     <!-- 과세/면세 구분 -->
-        <input type="hidden" name="corp_tax_no"       value="<?=$corp_tax_no?>">       <!-- 발행 사업자 번호 -->
-        <input type="hidden" name="corp_nm"           value="<?=$corp_nm?>">           <!-- 상호 -->
-        <input type="hidden" name="corp_owner_nm"     value="<?=$corp_owner_nm?>">     <!-- 대표자명 -->
-        <input type="hidden" name="corp_addr"         value="<?=$corp_addr?>">         <!-- 사업장주소 -->
-        <input type="hidden" name="corp_telno"        value="<?=$corp_telno?>">        <!-- 사업장 대표 연락처 -->
+        <input type="hidden" name="corp_type"         value="<?php echo $corp_type; ?>">         <!-- 사업장 구분 -->
+        <input type="hidden" name="corp_tax_type"     value="<?php echo $corp_tax_type; ?>">     <!-- 과세/면세 구분 -->
+        <input type="hidden" name="corp_tax_no"       value="<?php echo $corp_tax_no; ?>">       <!-- 발행 사업자 번호 -->
+        <input type="hidden" name="corp_nm"           value="<?php echo $corp_nm; ?>">           <!-- 상호 -->
+        <input type="hidden" name="corp_owner_nm"     value="<?php echo $corp_owner_nm; ?>">     <!-- 대표자명 -->
+        <input type="hidden" name="corp_addr"         value="<?php echo $corp_addr; ?>">         <!-- 사업장주소 -->
+        <input type="hidden" name="corp_telno"        value="<?php echo $corp_telno; ?>">        <!-- 사업장 대표 연락처 -->
 
-        <input type="hidden" name="tr_code"           value="<?=$tr_code?>">           <!-- 발행용도 -->
-        <input type="hidden" name="id_info"           value="<?=$id_info?>">           <!-- 신분확인 ID -->
-        <input type="hidden" name="amt_tot"           value="<?=$amt_tot?>">           <!-- 거래금액 총 합 -->
-        <input type="hidden" name="amt_sub"           value="<?=$amt_sup?>">           <!-- 공급가액 -->
-        <input type="hidden" name="amt_svc"           value="<?=$amt_svc?>">           <!-- 봉사료 -->
-        <input type="hidden" name="amt_tax"           value="<?=$amt_tax?>">           <!-- 부가가치세 -->
-        <input type="hidden" name="pay_type"          value="<?=$pay_type?>">          <!-- 결제 서비스 구분 -->
-        <input type="hidden" name="pay_trade_no"      value="<?=$pay_trade_no?>">      <!-- 결제 거래번호 -->
+        <input type="hidden" name="tr_code"           value="<?php echo $tr_code; ?>">           <!-- 발행용도 -->
+        <input type="hidden" name="id_info"           value="<?php echo $id_info; ?>">           <!-- 신분확인 ID -->
+        <input type="hidden" name="amt_tot"           value="<?php echo $amt_tot; ?>">           <!-- 거래금액 총 합 -->
+        <input type="hidden" name="amt_sub"           value="<?php echo $amt_sup; ?>">           <!-- 공급가액 -->
+        <input type="hidden" name="amt_svc"           value="<?php echo $amt_svc; ?>">           <!-- 봉사료 -->
+        <input type="hidden" name="amt_tax"           value="<?php echo $amt_tax; ?>">           <!-- 부가가치세 -->
+        <input type="hidden" name="pay_type"          value="<?php echo $pay_type; ?>">          <!-- 결제 서비스 구분 -->
+        <input type="hidden" name="pay_trade_no"      value="<?php echo $pay_trade_no; ?>">      <!-- 결제 거래번호 -->
 
-        <input type="hidden" name="mod_type"          value="<?=$mod_type?>">          <!-- 변경 타입 -->
-        <input type="hidden" name="mod_value"         value="<?=$mod_value?>">         <!-- 변경 요청 거래번호 -->
-        <input type="hidden" name="mod_gubn"          value="<?=$mod_gubn?>">          <!-- 변경 요청 거래번호 구분 -->
-        <input type="hidden" name="mod_mny"           value="<?=$mod_mny?>">           <!-- 변경 요청 금액 -->
-        <input type="hidden" name="rem_mny"           value="<?=$rem_mny?>">           <!-- 변경처리 이전 금액 -->
+        <input type="hidden" name="mod_type"          value="<?php echo $mod_type; ?>">          <!-- 변경 타입 -->
+        <input type="hidden" name="mod_value"         value="<?php echo $mod_value; ?>">         <!-- 변경 요청 거래번호 -->
+        <input type="hidden" name="mod_gubn"          value="<?php echo $mod_gubn; ?>">          <!-- 변경 요청 거래번호 구분 -->
+        <input type="hidden" name="mod_mny"           value="<?php echo $mod_mny; ?>">           <!-- 변경 요청 금액 -->
+        <input type="hidden" name="rem_mny"           value="<?php echo $rem_mny; ?>">           <!-- 변경처리 이전 금액 -->
 
-        <input type="hidden" name="cash_no"           value="<?=$cash_no?>">           <!-- 현금영수증 거래번호 -->
-        <input type="hidden" name="receipt_no"        value="<?=$receipt_no?>">        <!-- 현금영수증 승인번호 -->
-        <input type="hidden" name="app_time"          value="<?=$app_time?>">          <!-- 승인시간(YYYYMMDDhhmmss) -->
-        <input type="hidden" name="reg_stat"          value="<?=$reg_stat?>">          <!-- 등록 상태 코드 -->
-        <input type="hidden" name="reg_desc"          value="<?=iconv("cp949", "utf-8", $reg_desc)?>"> <!-- 등록 상태 설명 -->
+        <input type="hidden" name="cash_no"           value="<?php echo $cash_no; ?>">           <!-- 현금영수증 거래번호 -->
+        <input type="hidden" name="receipt_no"        value="<?php echo $receipt_no; ?>">        <!-- 현금영수증 승인번호 -->
+        <input type="hidden" name="app_time"          value="<?php echo $app_time; ?>">          <!-- 승인시간(YYYYMMDDhhmmss) -->
+        <input type="hidden" name="reg_stat"          value="<?php echo $reg_stat; ?>">          <!-- 등록 상태 코드 -->
+        <input type="hidden" name="reg_desc"          value="<?php echo iconv("cp949", "utf-8", $reg_desc); ?>"> <!-- 등록 상태 설명 -->
 
     </form>
     </body>
diff --git a/shop/kcp/pp_cli_result.php b/shop/kcp/pp_cli_result.php
index 3f622846b..496215a33 100644
--- a/shop/kcp/pp_cli_result.php
+++ b/shop/kcp/pp_cli_result.php
@@ -1,4 +1,4 @@
-<?
+<?php
 include './_common.php';
     /* ============================================================================== */
     /* =   PAGE : 결과 처리 PAGE                                                    = */
@@ -6,7 +6,7 @@ include './_common.php';
     /* =   Copyright (c)  2007   KCP Inc.   All Rights Reserverd.                   = */
     /* ============================================================================== */
 ?>
-<?
+<?php
 	/* ============================================================================== */
     /* =   01. KCP 지불 서버 정보 설정                                              = */
     /* = -------------------------------------------------------------------------- = */
@@ -119,13 +119,13 @@ include './_common.php';
                         <td bgcolor="CFCFCF" height="2"></td>
                     </tr>
                     <tr>
-                        <td align="center">결과 페이지(현금영수증 <?=$req_tx_name?>)</td>
+                        <td align="center">결과 페이지(현금영수증 <?php echo $req_tx_name; ?>)</td>
                     </tr>
                     <tr>
                         <td bgcolor="CFCFCF" height="2"></td>
                     </tr>
                 </table>
-<?
+<?php
     if ($req_tx == "pay")                          // 거래 구분 : 등록
     {
         if (!$bSucc == "false")                    // 업체 DB 처리 정상
@@ -136,49 +136,49 @@ include './_common.php';
                 <table width="85%" align="center" border="0" cellpadding="0" cellspacing="1">
                     <tr>
                         <td>결과코드</td>
-                        <td><?=$res_cd?></td>
+                        <td><?php echo $res_cd; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>결과 메세지</td>
-                        <td><?=$res_msg?></td>
+                        <td><?php echo $res_msg; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>현금영수증 거래번호</td>
-                        <td><?=$cash_no?></td>
+                        <td><?php echo $cash_no; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>현금영수증 승인번호</td>
-                        <td><?=$receipt_no?></td>
+                        <td><?php echo $receipt_no; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>등록 상태 코드</td>
-                        <td><?=$reg_stat?></td>
+                        <td><?php echo $reg_stat; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>등록 상태 설명</td>
-                        <td><?=$reg_desc?></td>
+                        <td><?php echo $reg_desc; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>승인시간</td>
-                        <td><?=$app_time?></td>
+                        <td><?php echo $app_time; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>현금영수증 URL</td>
-                        <td><input type="button" name="receiptView" value="영수증 확인" class="box" onClick="javascript:receiptView('<?=$cash_no?>')"></td>
+                        <td><input type="button" name="receiptView" value="영수증 확인" class="box" onClick="javascript:receiptView('<?php echo $cash_no; ?>')"></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td colspan="2">※ 영수증 확인은 실 등록의 경우에만 가능합니다.</td>
                     </tr>
                 </table>
-<?
+<?php
             }
             else                                       // 승인 실패
             {
@@ -186,15 +186,15 @@ include './_common.php';
                 <table width="85%" align="center" border="0" cellpadding="0" cellspacing="1">
                     <tr>
                         <td>결과코드</td>
-                        <td><?=$res_cd?></td>
+                        <td><?php echo $res_cd; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>결과 메세지</td>
-                        <td><?=$res_msg?></td>
+                        <td><?php echo $res_msg; ?></td>
                     </tr>
                 </table>
-<?
+<?php
             }
 
         }
@@ -204,18 +204,18 @@ include './_common.php';
                 <table width="85%" align="center" border="0" cellpadding="0" cellspacing="1">
                     <tr>
                         <td nowrap>취소 결과코드</td>
-                        <td><?=$res_cd?></td>
+                        <td><?php echo $res_cd; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td nowrap>취소 결과 메세지</td>
-                        <td><?=$res_msg?></td>
+                        <td><?php echo $res_msg; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td nowrap>상세메세지</td>
                         <td>
-<?
+<?php
             if ($res_cd == "0000")
             {
                 echo "결제는 정상적으로 이루어졌지만 쇼핑몰에서 결제 결과를 처리하는 중 오류가 발생하여 시스템에서 자동으로 취소 요청을 하였습니다. <br> 쇼핑몰로 전화하여 확인하시기 바랍니다.";
@@ -228,7 +228,7 @@ include './_common.php';
                         </td>
                     </tr>
                 </table>
-<?
+<?php
         }
 
     }
@@ -241,49 +241,49 @@ include './_common.php';
                 <table width="85%" align="center" border="0" cellpadding="0" cellspacing="1">
                     <tr>
                         <td>결과코드</td>
-                        <td><?=$res_cd?></td>
+                        <td><?php echo $res_cd; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>결과 메세지</td>
-                        <td><?=$res_msg?></td>
+                        <td><?php echo $res_msg; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>현금영수증 거래번호</td>
-                        <td><?=$cash_no?></td>
+                        <td><?php echo $cash_no; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>현금영수증 승인번호</td>
-                        <td><?=$receipt_no?></td>
+                        <td><?php echo $receipt_no; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>등록 상태 코드</td>
-                        <td><?=$reg_stat?></td>
+                        <td><?php echo $reg_stat; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>등록 상태 설명</td>
-                        <td><?=$reg_desc?></td>
+                        <td><?php echo $reg_desc; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>승인시간</td>
-                        <td><?=$app_time?></td>
+                        <td><?php echo $app_time; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>현금영수증 URL</td>
-                        <td><input type="button" name="receiptView" value="영수증 확인" class="box" onClick="javascript:receiptView('<?=$cash_no?>')"></td>
+                        <td><input type="button" name="receiptView" value="영수증 확인" class="box" onClick="javascript:receiptView('<?php echo $cash_no; ?>')"></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td colspan="2">※ 영수증 확인은 실 등록의 경우에만 가능합니다.</td>
                     </tr>
                 </table>
-<?
+<?php
         }
 		else
         {
@@ -291,15 +291,15 @@ include './_common.php';
                 <table width="85%" align="center" border="0" cellpadding="0" cellspacing="1">
                     <tr>
                         <td>결과코드</td>
-                        <td><?=$res_cd?></td>
+                        <td><?php echo $res_cd; ?></td>
                     </tr>
                     <tr><td colspan="2"><IMG SRC="./img/dot_line.gif" width="100%"></td></tr>
                     <tr>
                         <td>결과 메세지</td>
-                        <td><?=$res_msg?></td>
+                        <td><?php echo $res_msg; ?></td>
                     </tr>
                 </table>
-<?
+<?php
         }
     }
 ?>
diff --git a/skin/member/basic/register_form.skin.php b/skin/member/basic/register_form.skin.php
index 0abf94bdf..3a724df2a 100644
--- a/skin/member/basic/register_form.skin.php
+++ b/skin/member/basic/register_form.skin.php
@@ -214,7 +214,7 @@ if (!defined('_GNUBOARD_')) exit; // 개별 페이지 접근 불가
 <?php if ($w == "" && $config['cf_use_recommend']) {  ?>
 <tr>
     <th scope="row"><label for="reg_mb_recommend">추천인아이디</label></th>
-    <td><input type="text" name="mb_recommend" id="reg_mb_recommend" class="frm_input" required></td>
+    <td><input type="text" name="mb_recommend" id="reg_mb_recommend" class="frm_input"></td>
 </tr>
 <?php }  ?>
 
@@ -337,7 +337,7 @@ function fregisterform_submit(f)
         }
     }
 
-    if (typeof(f.mb_recommend) != 'undefined') {
+    if (typeof(f.mb_recommend) != 'undefined' && f.mb_recommend.value) {
         if (f.mb_id.value == f.mb_recommend.value) {
             alert('본인을 추천할 수 없습니다.');
             f.mb_recommend.focus();