public static function run()
    {
        global $config, $g5, $member;

        if (self::$is_end) return;  // 여러번 호출해도 한번만 실행되게 합니다.

        self::$is_end = 1;

        // ... (중략: 현재접속자 처리 부분은 그대로 두세요) ...

        $buffer = ob_get_contents();
        ob_end_clean();

        $stylesheet = '';
        $links = self::$css;

        if(!empty($links)) {
            foreach ($links as $key => $row) {
                // [수정] 배열이 아니거나 키가 없으면 건너뜀 (오류 방지)
                if (!is_array($row) || !isset($row[0])) continue; 

                $order[$key] = $row[0];
                $index[$key] = $key;
                $style[$key] = $row[1];
            }

            array_multisort($order, SORT_ASC, $index, SORT_ASC, $links);
            
            $links = run_replace('html_process_css_files', $links);

            foreach($links as $link) {
                if(!trim($link[1]))
                    continue;

                $link[1] = preg_replace('#\.css([\'\"]?>)$#i', '.css?ver='.G5_CSS_VER.'$1', $link[1]);

                $stylesheet .= PHP_EOL.$link[1];
            }
        }

        $javascript = '';
        $scripts = self::$js;
        $php_eol = '';

        unset($order);
        unset($index);

        if(!empty($scripts)) {
            foreach ($scripts as $key => $row) {
                 // [수정] 배열이 아니거나 키가 없으면 건너뜀 (오류 방지)
                if (!is_array($row) || !isset($row[0])) continue;

                $order[$key] = $row[0];
                $index[$key] = $key;
                $script[$key] = $row[1];
            }

            array_multisort($order, SORT_ASC, $index, SORT_ASC, $scripts);
            
            $scripts = run_replace('html_process_script_files', $scripts);

            foreach($scripts as $js) {
                if(!trim($js[1]))
                    continue;
                
                $add_version_str = (stripos($js[1], $http_host) !== false) ? '?ver='.G5_JS_VER : '';
                $js[1] = preg_replace('#\.js([\'\"]?>)<\/script>$#i', '.js'.$add_version_str.'$1</script>', $js[1]);

                $javascript .= $php_eol.$js[1];
                $php_eol = PHP_EOL;
            }
        }

        // ... (이하 코드는 그대로 두세요) ...<br />
<b>Fatal error</b>:  Uncaught Error: Call to undefined function sql_connect() in /home/e81l2kf55qzb/public_html/common.php:166
Stack trace:
#0 /home/e81l2kf55qzb/public_html/bbs/_common.php(2): include_once()
#1 /home/e81l2kf55qzb/public_html/bbs/board.php(2): include_once('/home/e81l2kf55...')
#2 {main}
  thrown in <b>/home/e81l2kf55qzb/public_html/common.php</b> on line <b>166</b><br />