docs(10_Wiki): 위키 구조 정리 — 언어 튜토리얼 카테고리 폴더 제거 + 신규 자산 동기화

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Topic_Graphic/Dev 등 신규 산출물과 Topics 내부 세션/메모리 기록을 동기화.

10_Wiki/Dev/Topic_PHP/PHP_Form_Complete.md

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+---
+id: php-form-complete
+title: "PHP Form Complete"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["sticky forms", "PHP 폼 완성 예제"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.87
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["php", "programming", "w3schools", "forms", "validation"]
+raw_sources: ["https://www.w3schools.com/php/php_form_complete.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[PHP Form Complete]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+Radio buttons are "re-checked" differently from text fields after submission — text inputs echo into the `value` attribute (`value="<?php echo $name;?>"`), but radio buttons instead conditionally echo the literal word `"checked"` into the tag based on which value matches, since a radio's persisted state is a boolean attribute, not a value string. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Sticky form pattern** — preserving submitted values in the form after validation errors, so the user doesn't have to re-type everything. [S1]
+- **Text inputs** — echo the variable into the `value` attribute. [S1]
+- **Textarea** — echo the variable BETWEEN the opening/closing tags (no `value` attribute exists for textarea). [S1]
+- **Radio buttons** — conditionally echo the literal string `"checked"` based on an `isset()` + equality check against the submitted gender. [S1]
+
+## 📖 세부 내용 (Details)
+- Text input sticky value: `<input type="text" name="name" value="<?php echo $name;?>">`. [S1]
+- Textarea sticky value: `<textarea name="comment" rows="5" cols="40"><?php echo $comment;?></textarea>`. [S1]
+- Radio button sticky check: `<input type="radio" name="gender" <?php if (isset($gender) && $gender=="female") echo "checked";?> value="female">Female`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — 검증 실패 후에도 입력값을 유지하는 sticky form 패턴이 사용자 경험 개선의 실전 사례다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Preserving a radio button's checked state after submission (PHP):
+```php
+<input type="radio" name="gender"
+    <?php if (isset($gender) && $gender=="female") echo "checked";?>
+    value="female">Female
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.87
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[PHP Tutorial]]
+- **관련 개념:** [[PHP Form URL Email]], [[PHP Date]]
+- **참조 맥락:** 폼 검증 섹션의 마무리 — 날짜(Date) 섹션으로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — PHP Complete Form Example — https://www.w3schools.com/php/php_form_complete.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "PHP Complete Form Example" page (Astra wiki-curation, P-Reinforce v3.1 format).