docs(10_Wiki): 위키 구조 정리 — 언어 튜토리얼 카테고리 폴더 제거 + 신규 자산 동기화

Topic_CSS/Topic_HTML/Topic_JavaScript/Topic_Prompt/Topic_Comfyui 등 기존 카테고리 폴더를 정리하고, Topic_Graphic/Dev 등 신규 산출물과 Topics 내부 세션/메모리 기록을 동기화.
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+---
+id: php-superglobals-server
+title: "PHP Superglobals Server"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["$_SERVER", "PHP 서버 슈퍼글로벌"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.88
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["php", "programming", "w3schools", "superglobals", "server"]
+raw_sources: ["https://www.w3schools.com/php/php_superglobals_server.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[PHP Superglobals Server]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`$_SERVER` entries are NOT guaranteed to exist on every server/environment — the source explicitly warns these values are populated by the web server itself, so code relying on a specific `$_SERVER` key must handle its potential absence rather than assuming universal availability. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`$_SERVER`** — holds info about the web server: headers, paths, script locations. [S1]
+- **Not universally guaranteed** — entries are created by the web server, so availability varies across environments. [S1]
+- **Common elements** — `PHP_SELF` (current script filename), `SERVER_NAME`, `HTTP_HOST`, `HTTP_REFERER`, `HTTP_USER_AGENT`, `SCRIPT_NAME`, `REQUEST_METHOD`, `REMOTE_ADDR`, and many more. [S1]
+
+## 📖 세부 내용 (Details)
+- Common usage: `echo $_SERVER['PHP_SELF']; echo $_SERVER['SERVER_NAME']; echo $_SERVER['HTTP_HOST']; echo $_SERVER['HTTP_USER_AGENT'];`. [S1]
+- Notable elements: `REQUEST_METHOD` (e.g. "POST"), `REMOTE_ADDR` (visitor's IP), `HTTPS` (secure connection check), `QUERY_STRING`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **환경 의존적 가용성**: $_SERVER 항목은 웹 서버에 의해 생성되므로 모든 서버/환경에서 동일하게 사용 가능하다는 보장이 없다는 점이 명시됨. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — $_SERVER['REQUEST_METHOD']로 요청 방식(POST/GET)을 확인하는 것이 폼 처리의 실전 패턴이다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Checking the request method via $_SERVER (PHP):
+```php
+if ($_SERVER["REQUEST_METHOD"] == "POST") {
+    // handle POST request
+}
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.88
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[PHP Tutorial]]
+- **관련 개념:** [[PHP Superglobals Globals]], [[PHP Superglobals Request]], [[PHP Forms]]
+- **참조 맥락:** 서버 정보 접근 — $_REQUEST 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — PHP $_SERVER Superglobal — https://www.w3schools.com/php/php_superglobals_server.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "PHP $_SERVER Superglobal" page (Astra wiki-curation, P-Reinforce v3.1 format).