php8.0 버전 호환 코드 적용 및 PHP 끝 태그 삭제 일괄적용

plugin/kcaptcha/kcaptcha_session.php

@@ -6,7 +6,7 @@ include_once('captcha.lib.php');
 while(true){
     $keystring='';
     for($i=0;$i<$length;$i++){
-        $keystring.=$allowed_symbols{mt_rand(0,strlen($allowed_symbols)-1)};
+        $keystring.=$allowed_symbols[mt_rand(0,strlen($allowed_symbols)-1)];
     }
     if(!preg_match('/cp|cb|ck|c6|c9|rn|rm|mm|co|do|cl|db|qp|qb|dp|ww/', $keystring)) break;
 }
@@ -14,5 +14,4 @@ while(true){
 set_session("ss_captcha_count", 0);
 set_session("ss_captcha_key", $keystring);
 $captcha = new KCAPTCHA();
-$captcha->setKeyString(get_session("ss_captcha_key"));
-?>
+$captcha->setKeyString(get_session("ss_captcha_key"));