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

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

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-string-escape	PHP String Escape	Programming_Language	draft	conceptual		escape characters PHP 이스케이프 문자		B	0.88	2026-07-04	2026-07-04			php programming w3schools strings escape	https://www.w3schools.com/php/php_string_escape.asp

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):

$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).