---
id: php-string-escape
title: "PHP String Escape"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["escape characters", "PHP 이스케이프 문자"]
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", "strings", "escape"]
raw_sources: ["https://www.w3schools.com/php/php_string_escape.asp"]
applied_in: []
github_commit: ""
---

# [[PHP String Escape]]

## 🎯 한 줄 통찰 (One-line insight)
PHP has an escape sequence specifically for the `$` sign (`\$`) — a character other languages rarely need to escape — because `$` triggers variable interpolation inside double-quoted strings, so writing a literal dollar sign next to what could be mistaken for a variable name requires this PHP-specific escape. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Escape character** — a backslash `\` followed by the character to insert literally. [S1]
- **Why needed** — inserting characters that would otherwise be interpreted specially (e.g., a `"` inside a double-quoted string). [S1]
- **Escape table** — `\'` (single quote), `\"` (double quote), `\$` (literal PHP variable sigil), `\n` (newline), `\r` (carriage return), `\t` (tab), `\f` (form feed), `\ooo` (octal), `\xhh` (hex). [S1]

## 📖 세부 내용 (Details)
- Problem: `$x = "We are the so-called "Vikings" from the north."; // illegal — breaks the string`. [S1]
- Fix: `$x = "We are the so-called \"Vikings\" from the north."; echo $x;`. [S1]

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

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 큰따옴표 문자열 안에 인용구를 포함해야 할 때 \"로 이스케이프하는 것이 표준 패턴이다. [S1]

## 💻 코드 패턴 (Code patterns)
Escaping double quotes inside a double-quoted string (PHP):
```php
$x = "We are the so-called \"Vikings\" from the north.";
echo $x;
```

## ✅ 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 Strings]], [[PHP String Slicing]], [[PHP Numbers]]
- **참조 맥락:** 문자열 섹션의 마지막 — 숫자(Numbers) 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — PHP - Escape Characters — https://www.w3schools.com/php/php_string_escape.asp

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