refactor(topics): 멀티 에이전트용 지식 재편 — _Common(공통 기본기) + Domain_* 구조

에이전트 8종(대화형/프로그래머 C·S/디자이너/설계자/기획자/QA/PD/PM)에게 [공통 기본 능력 + 롤별 Specialty] 2층으로 지식을 주입하기 위한 재분류. 문서 내용·포맷은 무수정, 폴더 이동만 (6,372개 문서 수 보존 확인). - Topic_Programming → Domain_Programming (내부 구조 보존) - Topic_Graphic → Domain_Design - Topic_Business → Domain_Product - Topic_General → Domain_General - _Common 신설: Math(구 Topic_Math_Specialty), Reasoning(구 General/From_Thinking & Reasoning), Reasoning_Creativity(구 General/From_창의성), Communication(Poetic_Blog_Writing + From_writing) - 타 도메인의 From_* 폴더는 유지 (출처 표기일 뿐, 이미 도메인에 맞게 분류된 문서) - 빈 폴더 정리 (memory/procedures) - 에이전트→폴더 매핑은 workspace의 .astra/agent-knowledge-map.json (9개 에이전트) Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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+---
+id: php-exceptions
+title: "PHP Exceptions"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["try catch finally", "Exception object", "PHP 예외"]
+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", "exceptions", "try-catch"]
+raw_sources: ["https://www.w3schools.com/php/php_exceptions.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[PHP Exceptions]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+An uncaught exception doesn't just print an error — it terminates the ENTIRE script, including any code AFTER the throwing line (`echo 'Hello';` never runs in the uncaught example) — making exception handling not just about nice error messages but about whether the rest of the program executes at all. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Exception** — an unwanted/unexpected event during script execution; thrown by many built-in functions/classes. [S1]
+- **`throw`** — raises an exception. [S1]
+- **`try`** — wraps code that might throw. [S1]
+- **`catch(Exception $e)`** — handles a thrown exception; specifies the exception type and a variable name. [S1]
+- **`finally`** — runs regardless of whether an exception was caught. [S1]
+- **`new Exception(message, code, previous)`** — all three constructor parameters optional. [S1]
+- **Exception object methods** — `getMessage()`, `getPrevious()`, `getCode()`, `getFile()`, `getLine()`. [S1]
+
+## 📖 세부 내용 (Details)
+- Uncaught exception halts everything after it: `echo divide(5, 0); echo 'Hello';` — "Hello" never prints, since the fatal error terminates the script. [S1]
+- Basic try/catch: `try { echo divide(5, 0); } catch(Exception $e) { echo 'Error: ' . $e->getMessage(); }`. [S1]
+- try/catch/finally: adds `finally { echo '<br>Process complete.'; }` which runs no matter what. [S1]
+- Full exception info: `catch(Exception $e) { $file = $e->getFile(); $line = $e->getLine(); $code = $e->getCode(); $message = $e->getMessage(); echo "Exception thrown in $file on line $line: [Code $code] $message"; }`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **미처리 예외의 전체 중단 효과**: 예외가 처리되지 않으면 발생 지점 이후의 모든 코드가 실행되지 않고 스크립트 자체가 종료된다는 점이 예제로 직접 증명됨. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — divide() 함수의 0으로 나누기 방지가 예외 처리의 표준 교육용 예시다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Try/catch/finally with full exception info (PHP):
+```php
+function divide($x, $y) {
+    if ($y == 0) {
+        throw new Exception("Cannot divide by zero.");
+    }
+    return $x / $y;
+}
+try {
+    echo divide(5, 0);
+} catch (Exception $e) {
+    echo "Exception in " . $e->getFile() . " on line " . $e->getLine() . ": " . $e->getMessage();
+} finally {
+    echo '<br>Process complete.';
+}
+```
+
+## ✅ 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 JSON]], [[PHP Error Handling]], [[PHP Exception]]
+- **참조 맥락:** 예외 처리 기초(throw/try/catch/finally) — 에러 처리(Error Handling) 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — PHP Exceptions — https://www.w3schools.com/php/php_exceptions.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "PHP Exceptions" page (Astra wiki-curation, P-Reinforce v3.1 format).