docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합

이전 재구성 작업에서 Dev/ 폴더가 누락되었던 것을 반영.

- Dev/Topic_Programming(중첩 폴더, 78개)은 Dev 자체 최상위 폴더들
  (Architecture/Conventions/Engineering_Intelligence 등)과 완전 중복이라 제거.
- Dev 최상위 엔지니어링 지식 폴더(Architecture/Conventions/Engineering_Intelligence/
  Failure_Library/Generalized_Principles/Language/Pattern_Catalog/Platform_Guides/
  Subsystems, 77개)는 이미 Topic_Programming/Topic_Programming에 더 최신 버전이
  존재해 중복 제거(고유 콘텐츠 1개는 예외 처리하여 이동 보존).
- Dev의 W3Schools 언어 튜토리얼 폴더(Topic_C/CPP/CSS/CSharp/HOWTO/HTML/Java/
  JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동.
- 에이전트 운영 상태(.astra/docs)는 그대로 유지, 콘텐츠 폴더만 정리.
- Topic_Programming 최종 문서 수: 2784 → 3985.

10_Wiki/Topic_Programming/Topic_PHP/PHP_Includes.md

@@ -0,0 +1,71 @@
+---
+id: php-includes
+title: "PHP Includes"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["include vs require", "PHP 파일 포함"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.9
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["php", "programming", "w3schools", "include", "require"]
+raw_sources: ["https://www.w3schools.com/php/php_includes.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[PHP Includes]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`include` and `require` behave identically on SUCCESS but diverge sharply on FAILURE — a missing file only produces a warning with `include` (script continues, later code still runs), while the same missing file with `require` triggers a fatal error that halts script execution entirely, making the choice a statement about how critical that file is to the page working at all. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`include 'file';`** / **`require 'file';`** — insert a file's content into the calling file. [S1]
+- **Failure behavior difference** — `include` → `E_WARNING`, script continues; `require` → `E_ERROR` (fatal), script stops. [S1]
+- **When to use `include`** — non-critical files like headers, footers, navigation menus (page can still render without them). [S1]
+- **When to use `require`** — critical files like configuration or database connections (page is meaningless without them). [S1]
+- **Included files share variable scope** — variables defined in an included file become usable in the calling file. [S1]
+
+## 📖 세부 내용 (Details)
+- Include a footer: `<?php include 'footer.php';?>`. [S1]
+- Include a nav menu: `<div class="menu"><?php include 'menu.php';?></div>`. [S1]
+- Include shares variables: `vars.php` defines `$color='red'; $car='BMW';`; the including file can then `echo "I have a $color $car.";` after `include 'vars.php';`. [S1]
+- include on missing file (continues): `<?php include 'noFileExists.php'; echo "I have a $color $car."; ?>` — the echo still runs (with warning), though `$color`/`$car` are undefined here since the file wasn't found. [S1]
+- require on missing file (halts): `<?php require 'noFileExists.php'; echo "I have a $color $car."; ?>` — the echo NEVER executes; script dies at the require line. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **실패 시 동작의 근본적 차이**: include는 경고만 내고 스크립트가 계속 실행되지만, require는 치명적 에러를 내고 스크립트 실행이 완전히 중단된다는 점이 대비 예제로 직접 증명됨. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 모든 페이지가 공유하는 표준 헤더/푸터/메뉴 파일을 include로 재사용하는 것이 실전 코드 재사용의 대표 패턴이다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+require halts execution on failure, unlike include (PHP):
+```php
+<?php require 'noFileExists.php'; // fatal error — script dies here
+echo "This line never runs.";
+?>
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.90
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[PHP Tutorial]]
+- **관련 개념:** [[PHP Date]], [[PHP Files]], [[PHP Variables Scope]]
+- **참조 맥락:** 코드 재사용을 위한 파일 포함 — 파일 처리(Files) 섹션으로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — PHP Include Files — https://www.w3schools.com/php/php_includes.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "PHP Include Files" page (Astra wiki-curation, P-Reinforce v3.1 format).