---
id: php-mysql-insert
title: "PHP MySQL Insert"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["INSERT INTO", "PHP MySQL 데이터 삽입"]
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", "mysql", "insert"]
raw_sources: ["https://www.w3schools.com/php/php_mysql_insert.asp"]
applied_in: []
github_commit: ""
---

# [[PHP MySQL Insert]]

## 🎯 한 줄 통찰 (One-line insight)
AUTO_INCREMENT and default-timestamp columns must be OMITTED from the INSERT statement entirely — the `id` and `reg_date` columns aren't listed in `INSERT INTO MyGuests (firstname, lastname, email)` at all, since MySQL fills them in automatically; explicitly specifying them would defeat their automatic behavior. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`INSERT INTO table (columns) VALUES (values)`** — adds a new record. [S1]
- **Quoting rules** — the whole SQL query is quoted in PHP; string values inside are quoted; numeric values are NOT quoted; `NULL` is never quoted. [S1]
- **AUTO_INCREMENT/default-timestamp columns are omitted** — `id` and `reg_date` don't appear in the column list at all; MySQL fills them automatically. [S1]

## 📖 세부 내용 (Details)
- Insert statement omitting auto-managed columns: `$sql = "INSERT INTO MyGuests (firstname, lastname, email) VALUES ('John', 'Doe', 'john@example.com')";`. [S1]
- MySQLi OOP execution: `if ($conn->query($sql) === TRUE) { echo "New record created successfully"; } else { echo "Error: " . $sql . "<br>" . $conn->error; }`. [S1]
- PDO execution: `$conn->exec($sql); echo "New record created successfully";` wrapped in try/catch(PDOException). [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- **자동 관리 컬럼 생략 규칙**: AUTO_INCREMENT나 기본 타임스탬프를 가진 컬럼은 INSERT 문에 명시하지 않아야 MySQL이 자동으로 값을 채운다는 점이 강조됨. [S1]

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — MyGuests 테이블에 이름/이메일만 삽입하고 id/reg_date는 자동 처리되는 것이 실전 삽입 패턴이다. [S1]

## 💻 코드 패턴 (Code patterns)
Inserting a record while omitting auto-managed columns (PHP):
```php
$sql = "INSERT INTO MyGuests (firstname, lastname, email)
        VALUES ('John', 'Doe', 'john@example.com')"; // id, reg_date auto-filled
if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
}
```

## ✅ 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 MySQL Create Table]], [[PHP MySQL Insert Last ID]], [[PHP MySQL Insert Multiple]]
- **참조 맥락:** 데이터 삽입 기초 — 마지막 삽입 ID 조회(Insert Last ID) 챕터로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — PHP MySQL Insert Data — https://www.w3schools.com/php/php_mysql_insert.asp

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