---
id: php-arrays-access
title: "PHP Arrays Access"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["PHP 배열 접근"]
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", "arrays", "access"]
raw_sources: ["https://www.w3schools.com/php/php_arrays_access.asp"]
applied_in: []
github_commit: ""
---

# [[PHP Arrays Access]]

## 🎯 한 줄 통찰 (One-line insight)
An array item can hold a function NAME as a string, and calling `$myArr[2]()` actually invokes that named function — this dynamic-call pattern (storing a callable's name and invoking it via array access + parentheses) is a lightweight precursor to PHP's full callback-function mechanism covered later. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Access by index (indexed array)** — `$cars[2]`. [S1]
- **Access by key (associative array)** — `$cars["year"]`. [S1]
- **Double or single quotes** — both work identically for key access: `$cars["model"]` / `$cars['model']`. [S1]
- **Executing a function stored as an array item** — `$myArr[2]();` calls the function whose name is stored at that index. [S1]
- **`foreach`** — standard iteration for both indexed and associative arrays. [S1]

## 📖 세부 내용 (Details)
- Indexed access: `$cars = array("Volvo", "BMW", "Toyota"); echo $cars[2]; // "Toyota"`. [S1]
- Associative access: `$cars = array("brand" => "Ford", "model" => "Mustang", "year" => 1964); echo $cars["year"];`. [S1]
- Function-name-as-array-item, invoked: `function myFunction() { echo "I come from a function!"; } $myArr = array("Volvo", 15, "myFunction"); $myArr[2]();`. [S1]
- Same pattern via associative key: `$myArr = array("car" => "Volvo", "age" => 15, "message" => "myFunction"); $myArr["message"]();`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
소스에서 모순되는 정보는 발견되지 않음.

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 배열에 저장된 함수 이름을 인덱스로 호출하는 패턴이 콜백 함수(Callback Functions) 챕터로 이어지는 예고편이다. [S1]

## 💻 코드 패턴 (Code patterns)
Invoking a function whose name is stored as an array item (PHP):
```php
function myFunction() {
    echo "I come from a function!";
}
$myArr = array("Volvo", 15, "myFunction");
$myArr[2](); // calls myFunction()
```

## ✅ 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 Arrays Create]], [[PHP Arrays Update]], [[PHP Callback Functions]]
- **참조 맥락:** 배열 항목 접근 및 함수 실행 — 배열 수정(Update) 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — PHP Access Arrays — https://www.w3schools.com/php/php_arrays_access.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "PHP Access Arrays" page (Astra wiki-curation, P-Reinforce v3.1 format).
