diff --git a/mobile/skin/member/basic/register_form.skin.php b/mobile/skin/member/basic/register_form.skin.php
index a8aacd3e0..0064dbc9d 100644
--- a/mobile/skin/member/basic/register_form.skin.php
+++ b/mobile/skin/member/basic/register_form.skin.php
@@ -133,7 +133,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 	        <li>
 	            <label for="reg_mb_hp" class="sound_only">휴대폰번호<?php if ($config['cf_req_hp']) { ?><strong>필수</strong><?php } ?></label>
 	            
-	            <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo ($config['cf_req_hp'])?"required":""; ?> class="frm_input full_input <?php echo ($config['cf_req_hp'])?"required":""; ?>" maxlength="20" placeholder="휴대폰번호">
+	            <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo $required ?>	<?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?> class="frm_input full_input <?php echo $required ?> <?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?>" <?php if ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa']) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin")) echo "readonly"; ?> maxlength="20" placeholder="휴대폰번호">
 	            <?php if ($config['cf_cert_use'] && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) { ?>
 	            <input type="hidden" name="old_mb_hp" value="<?php echo get_text($member['mb_hp']) ?>">
 	            <?php } ?>
diff --git a/plugin/kgcert/kg_find_result.php b/plugin/kgcert/kg_find_result.php
index 77de6cf6e..864e6e9ca 100644
--- a/plugin/kgcert/kg_find_result.php
+++ b/plugin/kgcert/kg_find_result.php
@@ -27,11 +27,11 @@
         curl_close($ch);
         $res_data = json_decode($response, true);
 
-        if($res_data['resultCode'] == "0000") {
+        if($res_data['resultCode'] === "0000") {
 
             @insert_cert_history('@password_lost@', 'kg', 'sa'); // 인증성공 시 내역 기록
 
-            $cert_type = 'sa';                                      // 인증타입
+            $cert_type      = 'sa';                                 // 인증타입
             $cert_no        = $res_data['txId'];                    // 이니시스 트랜잭션 ID
             $phone_no       = $res_data['userPhone'];               // 전화번호
             $user_name      = $res_data['userName'];                // 이름
@@ -50,7 +50,7 @@
                 alert_close("인증하신 정보로 가입된 회원정보가 없습니다.");
                 exit;                
             }
-        }else{
+        } else {
             // 인증실패 curl의 인증실패 체크
             alert_close('코드 : '.$res_data['resultCode'].'  '.urldecode($res_data['resultMsg']));
             exit;
diff --git a/plugin/kgcert/kg_request.php b/plugin/kgcert/kg_request.php
index f93dea495..0b78e5d03 100644
--- a/plugin/kgcert/kg_request.php
+++ b/plugin/kgcert/kg_request.php
@@ -26,7 +26,7 @@
 
 	$flgFixedUser = (!empty($member['mb_id']) && !empty($member['mb_name']) && !empty($member['mb_hp']) && !empty($member['mb_birth']))?  'Y' : 'N';  // 특정사용자 고정시 : Y 세팅및 아래 해시 데이터 생성
 
-	// php8버전 값체크 경고 때문에 필수값이 아닌 값이 없을수 있는 선택값들은 선언해주어야함
+	// php8버전 값체크 경고 때문에 필수값이 아닌 값이 없을수 있는 선택값들은 초기화해주어야함
 	$userName = '';
 	$userPhone = '';
 	$userBirth = '';
@@ -40,7 +40,8 @@
 		$plainText2 = hash("sha256",(string)$userName.(string)$mid.(string)$userPhone.(string)$mTxId.(string)$userBirth.(string)$reqSvcCd);
 		$userHash = $plainText2; 
 	}
-	switch($_GET['pageType']){		
+
+	switch($_GET['pageType']) {		
 		case "register":
 			$resultPage = "/kg_result.php";
 			break;
diff --git a/plugin/kgcert/kg_result.php b/plugin/kgcert/kg_result.php
index 7cc5b74d3..decfa26ca 100644
--- a/plugin/kgcert/kg_result.php
+++ b/plugin/kgcert/kg_result.php
@@ -34,7 +34,7 @@
 
             @insert_cert_history($member['mb_id'], 'kg', 'sa'); // 인증성공 시 내역 기록
 
-            $cert_type = 'sa';                                      // 인증타입
+            $cert_type      = 'sa';                                 // 인증타입
             $cert_no        = $res_data['txId'];                    // 이니시스 트랜잭션 ID
             $phone_no       = $res_data['userPhone'];               // 전화번호
             $user_name      = $res_data['userName'];                // 이름
@@ -71,7 +71,7 @@
             //set_session("ss_cert_sex",     ($sex_code=="01"?"M":"F")); // 이니시스 통합인증은 성별정보 리턴 없음
             set_session('ss_cert_dupinfo', $mb_dupinfo);       
 
-        }else{
+        } else {
             // 인증실패 curl의 인증실패 체크
             alert_close('코드 : '.$res_data['resultCode'].'  '.urldecode($res_data['resultMsg']));
             exit;
diff --git a/skin/member/basic/register_form.skin.php b/skin/member/basic/register_form.skin.php
index 3b56e5726..f904fa61d 100644
--- a/skin/member/basic/register_form.skin.php
+++ b/skin/member/basic/register_form.skin.php
@@ -141,7 +141,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 	            <?php if ($config['cf_use_hp'] || ($config["cf_cert_use"] && ($config['cf_cert_hp'] || $config['cf_cert_sa']))) {  ?>
 	                <label for="reg_mb_hp">휴대폰번호<?php if ($config['cf_req_hp']) { ?><strong class="sound_only">필수</strong><?php } ?></label>
 	                
-	                <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo ($config['cf_req_hp'])?"required":""; ?> class="frm_input full_input <?php echo ($config['cf_req_hp'])?"required":""; ?>" <?php if ($config['cf_cert_use'] && ($config['cf_cert_hp'] || $config['cf_cert_sa']) && $member['mb_certify']) { echo "readonly"; } ?> maxlength="20" placeholder="휴대폰번호">
+	                <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo $required ?>	<?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?> class="frm_input full_input <?php echo $required ?> <?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?>" <?php if ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa']) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin")) echo "readonly"; ?> maxlength="20" placeholder="휴대폰번호">
 	                <?php if ($config['cf_cert_use'] && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) { ?>
 	                <input type="hidden" name="old_mb_hp" value="<?php echo get_text($member['mb_hp']) ?>">
 	                <?php } ?>
diff --git a/theme/basic/mobile/skin/member/basic/register_form.skin.php b/theme/basic/mobile/skin/member/basic/register_form.skin.php
index c3afb973e..91ab5d2a7 100644
--- a/theme/basic/mobile/skin/member/basic/register_form.skin.php
+++ b/theme/basic/mobile/skin/member/basic/register_form.skin.php
@@ -132,7 +132,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 	        <li>
 	            <label for="reg_mb_hp" class="sound_only">휴대폰번호<?php if ($config['cf_req_hp']) { ?><strong>필수</strong><?php } ?></label>
 	            
-	            <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo ($config['cf_req_hp'])?"required":""; ?> class="frm_input full_input <?php echo ($config['cf_req_hp'])?"required":""; ?>" <?php if ($config['cf_cert_use'] && ($config['cf_cert_hp'] || $config['cf_cert_sa']) && $member['mb_certify']) { echo "readonly"; } ?> maxlength="20" placeholder="휴대폰번호">
+	            <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo $required ?>	<?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?> class="frm_input full_input <?php echo $required ?> <?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?>" <?php if ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa']) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin")) echo "readonly"; ?> maxlength="20" placeholder="휴대폰번호">
 	            <?php if ($config['cf_cert_use'] && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) { ?>
 	            <input type="hidden" name="old_mb_hp" value="<?php echo get_text($member['mb_hp']) ?>">
 	            <?php } ?>
diff --git a/theme/basic/skin/member/basic/register_form.skin.php b/theme/basic/skin/member/basic/register_form.skin.php
index 3b56e5726..f904fa61d 100644
--- a/theme/basic/skin/member/basic/register_form.skin.php
+++ b/theme/basic/skin/member/basic/register_form.skin.php
@@ -141,7 +141,7 @@ add_stylesheet('<link rel="stylesheet" href="'.$member_skin_url.'/style.css">',
 	            <?php if ($config['cf_use_hp'] || ($config["cf_cert_use"] && ($config['cf_cert_hp'] || $config['cf_cert_sa']))) {  ?>
 	                <label for="reg_mb_hp">휴대폰번호<?php if ($config['cf_req_hp']) { ?><strong class="sound_only">필수</strong><?php } ?></label>
 	                
-	                <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo ($config['cf_req_hp'])?"required":""; ?> class="frm_input full_input <?php echo ($config['cf_req_hp'])?"required":""; ?>" <?php if ($config['cf_cert_use'] && ($config['cf_cert_hp'] || $config['cf_cert_sa']) && $member['mb_certify']) { echo "readonly"; } ?> maxlength="20" placeholder="휴대폰번호">
+	                <input type="text" name="mb_hp" value="<?php echo get_text($member['mb_hp']) ?>" id="reg_mb_hp" <?php echo $required ?>	<?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?> class="frm_input full_input <?php echo $required ?> <?php echo ($config['cf_req_hp'] || ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin"))?"required":""; ?>" <?php if ($config['cf_cert_use'] <> 0 && ($config['cf_cert_hp'] || $config['cf_cert_sa']) && (!empty($member['mb_certify']) && $member['mb_certify'] != "ipin")) echo "readonly"; ?> maxlength="20" placeholder="휴대폰번호">
 	                <?php if ($config['cf_cert_use'] && ($config['cf_cert_hp'] || $config['cf_cert_sa'])) { ?>
 	                <input type="hidden" name="old_mb_hp" value="<?php echo get_text($member['mb_hp']) ?>">
 	                <?php } ?>