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.
2026-07-05 00:10:59 +09:00
parent a397bc4720
commit 1cfd3bbb56
1495 changed files with 68534 additions and 27 deletions
@@ -0,0 +1,70 @@
+---
+id: php-oop-constants
+title: "PHP OOP Constants"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["class constants", "scope resolution operator", "PHP 클래스 상수"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.89
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["php", "programming", "w3schools", "oop", "constants"]
+raw_sources: ["https://www.w3schools.com/php/php_oop_constants.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[PHP OOP Constants]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+Class constants use TWO different keywords depending on whether you're inside or outside the class — `ClassName::CONSTANT` from outside, but `self::CONSTANT` from inside a method — even though both use the same `::` scope resolution operator, meaning the class-name vs. self choice signals your calling context. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Class constant** — declared with `const`; fixed value, cannot change once set; default visibility is `public`. [S1]
+- **Case-sensitive but conventionally uppercase** — best practice names constants in ALL_CAPS. [S1]
+- **Access from outside** — `ClassName::CONSTANT_NAME`. [S1]
+- **Access from inside** — `self::CONSTANT_NAME`. [S1]
+
+## 📖 세부 내용 (Details)
+- Outside access: `class Goodbye { const MESSAGE = "Thank you for visiting W3Schools.com!"; } echo Goodbye::MESSAGE;`. [S1]
+- Inside access (self): `class Goodbye { const MESSAGE = "..."; public function bye() { echo self::MESSAGE; } } $goodbye = new Goodbye(); $goodbye->bye();`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 클래스 상수는 정적 메서드/속성 챕터에서 사용하는 :: 연산자를 먼저 익히는 단계다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Accessing a class constant from inside via self:: (PHP):
+```php
+class Goodbye {
+    const MESSAGE = "Thank you for visiting W3Schools.com!";
+    public function bye() {
+        echo self::MESSAGE;
+    }
+}
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.89
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[PHP Tutorial]]
+- **관련 개념:** [[PHP OOP Inheritance]], [[PHP OOP Classes Abstract]], [[PHP OOP Static Properties]]
+- **참조 맥락:** :: 연산자를 이용한 클래스 상수 접근 — 추상 클래스(Abstract Classes) 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — PHP OOP - Class Constants — https://www.w3schools.com/php/php_oop_constants.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "PHP OOP Class Constants" page (Astra wiki-curation, P-Reinforce v3.1 format).