---
id: php-looping-while
title: "PHP Looping While"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["while loop", "endwhile", "PHP while 반복문"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.9
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["php", "programming", "w3schools", "loops", "while"]
raw_sources: ["https://www.w3schools.com/php/php_looping_while.asp"]
applied_in: []
github_commit: ""
---

# [[PHP Looping While]]

## 🎯 한 줄 통찰 (One-line insight)
PHP's while loop supports an alternative colon-based syntax (`while ($i < 6): ... endwhile;`) purely for template/HTML-embedding contexts — functionally identical to the brace syntax, but this "alt syntax" pattern (also seen in if/foreach) exists specifically because it reads more cleanly when PHP is interleaved with HTML markup. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`while (condition) { ... }`** — condition checked BEFORE each iteration; false-from-start means zero executions. [S1]
- **`break`** — exits the loop early even if the condition is still true. [S1]
- **`continue`** — skips the rest of the current iteration, proceeds to the next condition check. [S1]
- **Alternative syntax** — `while (condition): ... endwhile;` — same behavior, colon-based. [S1]
- **Custom step size** — incrementing by more than 1 per iteration (e.g. `$i += 10`). [S1]

## 📖 세부 내용 (Details)
- Basic loop: `$i = 1; while ($i < 6) { echo $i; $i++; }`. [S1]
- Break: `$i = 1; while ($i < 6) { if ($i == 3) break; echo $i; $i++; }`. [S1]
- Continue: `$i = 0; while ($i < 6) { $i++; if ($i == 3) continue; echo $i; }`. [S1]
- Alt syntax: `$i = 1; while ($i < 6): echo $i; $i++; endwhile;`. [S1]
- Step-10 counting: `$i = 0; while ($i < 100) { $i += 10; echo $i . "<br>"; }`. [S1]

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

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 카운터를 10씩 증가시켜 100까지 세는 예제가 스텝 크기 조정의 대표 패턴이다. [S1]

## 💻 코드 패턴 (Code patterns)
While loop with alternative colon syntax (PHP):
```php
$i = 1;
while ($i < 6):
    echo $i;
    $i++;
endwhile;
```

## ✅ 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 Looping]], [[PHP Looping Do While]], [[PHP Looping Break]], [[PHP Looping Continue]]
- **참조 맥락:** 조건 기반 반복의 기본형 — do-while과의 실행 시점 차이가 다음 챕터의 핵심.

## 📚 출처 (Sources)
- [S1] W3Schools — PHP while Loop — https://www.w3schools.com/php/php_looping_while.asp

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