2nd/10_Wiki/Dev/Topic_PHP/PHP_OOP_Constructor.md

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id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
php-oop-constructor	PHP OOP Constructor	Programming_Language	draft	conceptual		__construct() PHP 생성자		B	0.9	2026-07-04	2026-07-04			php programming w3schools oop constructor	https://www.w3schools.com/php/php_oop_constructor.asp

PHP OOP Constructor

🎯 한 줄 통찰 (One-line insight)

__construct() eliminates the need to call a separate setter method after object creation — instead of new Fruit(); $apple->set_details(...) (two steps), the constructor lets new Fruit('Apple', 'Red') initialize properties in ONE step, directly reducing the code from the previous chapter's two-call pattern. [S1]

🧠 핵심 개념 (Core concepts)

• __construct($params) — a special method automatically invoked whenever new creates an object; name starts with double underscore. [S1]
• Accepts arguments — passed at creation time: new Fruit("Apple", "Red"). [S1]
• Purpose — dynamic initialization, replacing a separate setter call. [S1]

📖 세부 내용 (Details)

• Constructor-based initialization: class Fruit { public $name; public $color; function __construct($name, $color) { $this->name = $name; $this->color = $color; } function get_details() { echo "Name: " . $this->name . ". Color: " . $this->color .".<br>"; } } $apple = new Fruit('Apple', 'Red'); $apple->get_details();. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 생성자로 이름/색상을 한 번에 초기화하는 것이 setter 메서드 호출을 줄이는 표준 패턴이다. [S1]

💻 코드 패턴 (Code patterns)

Constructor-based initialization in one step (PHP):

class Fruit {
    public $name;
    public $color;
    function __construct($name, $color) {
        $this->name = $name;
        $this->color = $color;
    }
}
$apple = new Fruit('Apple', 'Red'); // initialized directly, no separate setter call

✅ 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 OOP Classes Objects, PHP OOP Destructor
• 참조 맥락: 객체 초기화 메서드 — 소멸자(Destructor) 챕터로 직접 이어짐(생성자의 반대 개념).

📚 출처 (Sources)

• [S1] W3Schools — PHP OOP - Constructor Method — https://www.w3schools.com/php/php_oop_constructor.asp

📝 변경 이력 (Change history)

• 2026-07-04: Initial draft synthesized from the W3Schools "PHP OOP Constructor Method" page (Astra wiki-curation, P-Reinforce v3.1 format).