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10_Wiki/Dev/Topic_PHP/PHP_OOP_What_Is.md

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+---
+id: php-oop-what-is
+title: "PHP OOP What Is"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["object-oriented programming", "PHP OOP 개요"]
+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", "oop"]
+raw_sources: ["https://www.w3schools.com/php/php_oop_what_is.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[PHP OOP What Is]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+PHP's OOP overview names five pillars up front (Classes/Objects, Encapsulation, Inheritance, Abstraction, Interfaces) as a package deal — the same five-concept structure the tutorial follows chapter by chapter, meaning "learning PHP OOP" is explicitly scoped as these five specific mechanisms, not an open-ended topic. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **OOP** — organizing code into classes/objects with properties and methods, vs. procedural's sequential step-by-step execution. [S1]
+- **Advantages** — clear structure, DRY-friendly maintainability, reusable applications with less code. [S1]
+- **Class** — a template for objects. [S1]
+- **Object** — an individual instance of a class; inherits properties/methods but has its own property values. [S1]
+- **Five OOP pillars in this tutorial** — Classes/Objects, Encapsulation (access modifiers), Inheritance, Abstraction (non-instantiable base classes), Interfaces (method contracts). [S1]
+
+## 📖 세부 내용 (Details)
+- Fruit → Apple/Banana/Mango, Car → Volvo/Audi/Toyota illustrate class-vs-objects (same illustration used in Java's OOP intro). [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — OOP 5대 개념(클래스/캡슐화/상속/추상화/인터페이스)의 개념적 도입부다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+해당 챕터는 개념 소개 중심으로 별도 코드 예제가 없음 — 다음 챕터([[PHP OOP Classes Objects]])에서 실제 클래스 선언 문법이 시작된다.
+
+## ✅ 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 OOP Classes Objects]], [[PHP OOP Inheritance]], [[Java OOP]]
+- **참조 맥락:** PHP OOP 섹션 전체의 개념적 도입부 — 클래스/객체 문법으로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — PHP Object-Oriented Programming — https://www.w3schools.com/php/php_oop_what_is.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "PHP Object-Oriented Programming" page (Astra wiki-curation, P-Reinforce v3.1 format).