HTTPヘッダ情報チェック
| HTTP/1.1 200 OK | |
| Server | nginx-reuseport/1.21.1 |
| Date | Tue, 16 Dec 2025 16:42:34 GMT |
| Content-Type | text/html; charset=UTF-8 |
| Transfer-Encoding | chunked |
| Connection | keep-alive |
| Keep-Alive | timeout=30 |
| Vary | Accept-Encoding |
| X-Powered-By | PHP/8.3.20 |
| Last-Modified | Fri, 17 Mar 2023 16:30:46 GMT |