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CI4 Playground

CodeIgniter 4의 주요 기능을 코드와 실행 결과로 함께 배우는 55개 예제 모음입니다.

For agents: Korean collection of 55 runnable CodeIgniter 4 examples covering routing, controllers, models, filters, REST API and JWT.

codeigniter 4 php tutorial code examples rest api jwt

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llms.txt: http://cikorea.net/llms.txt
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Registered: 2011-12-29
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Categories: Developer tools · Documentation and reference
For agents: Documentation: developer or product docs worth reading, nothing to call
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Audience: developers · agents can: read docs · ko
First seen: 2026-10-25T23:11:52.571Z
Last checked: 2026-10-28T10:29:47.244Z
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# CI4 Playground

> CodeIgniter 4의 주요 기능을 코드와 실행 결과로 함께 배우는 55개 예제 모음입니다.
> PHP 8.2+, CodeIgniter 4.7, SQLite3 기반으로 별도 DB 설치 없이 바로 실행 가능합니다.

## 핵심 기능

- [라우팅](examples/routing): 기본/파라미터/Named Route/HTTP 메서드/그룹/리다이렉트
- [컨트롤러](examples/controllers): Request 객체, 폼 처리, 유효성 검사, Response 타입
- [뷰](examples/views): 기본 렌더링, 레이아웃 시스템, 파셜, View Cell
- [모델 & 데이터베이스](examples/models): CRUD, Query Builder, 페이지네이션, Entity 클래스
- [Entity 심화](examples/entityadvanced): $casts, $datamap, virtual property getter/setter
- [필터](examples/filters): Before/After 필터, 인증 필터 패턴

## 고급 기능

- [RESTful API](examples/api): JSON 응답, HTTP 상태 코드, POST API 라이브 테스트
- [RESTful API v2 (JWT)](examples/apiv2): 라이브러리 없는 HS256 JWT 발급/검증, Bearer 인증

## 입출력 처리

- [파일 업로드](examples/fileupload): 단일/다중 업로드, 유효성 검사, 파일 관리
- [파일 업로드 심화](examples/fileupload-advanced): Drag & Drop, XHR 진행률, AJAX 업로드
- [TinyMCE 에디터](examples/tinymce): 리치 텍스트 편집, 이미지 업로드, HTML 저장
- [세션 & 쿠키](examples/session): 세션 CRUD, 플래시 데이터, 쿠키 설정/삭제
- [유효성 검사](examples/validation): 기본 규칙, 커스텀 메시지, 인라인 규칙
- [HTTP 클라이언트](examples/httpclient): CURLRequest 외부 API 호출, GET/POST/헤더
- [이메일 발송](examples/email): SMTP 설정, HTML 메일, 첨부파일

## 아키텍처 패턴

- [서비스 레이어](examples/servicelayer): Controller/Service/Model 레이어 분리
- [Repository 패턴](examples/repository): Interface/Repository/Controller 레이어 분리
- [커스텀 헬퍼](examples/helper): 헬퍼 함수 정의, 자동 로드
- [캐싱](examples/cache): 파일/더미 캐시, TTL, 태그 기반 캐시
- [다국어 i18n](examples/lang): 언어 파일, lang(), 런타임 언어 전환
- [이벤트 시스템](examples/events): Events::on(), trigger(), 우선순위
- [CLI 커맨드](examples/cli): BaseCommand 상속, spark 명령어 등록
- [테스팅](examples/testing): PHPUnit, Feature 테스트, Mock, CI4 테스트 헬퍼

## 실무 패턴

- [DB 트랜잭션](examples/transaction): transStart/Complete/Rollback, 중첩 트랜잭션
- [로깅](examples/logging): log_message(), PSR-3 레벨, 로그 파일 뷰어
- [예외 처리](examples/exception): PageNotFoundException, 전역 핸들러, try/catch
- [Throttler](examples/throttler): 토큰 버킷 속도 제한, 요청 횟수 제한
- [Model 콜백](examples/modelcallback): beforeInsert, afterFind, 비밀번호 자동 해싱
- [Config 환경 분리](examples/configenv): BaseConfig 서브클래스, .env 오버라이드
- [유효성 검사 고급](examples/advancedvalidation): 커스텀 규칙 클래스, 규칙 그룹, 조건부
- [API 인증](examples/apiauth): API Key 발급/검증/취소, Bearer 토큰 필터
- [Security](examples/securitydemo): esc() 이스케이프, sanitizeFilename(), CSRF
- [Query Builder 고급](examples/querybuilderadvanced): JOIN, 서브쿼리, GROUP BY/HAVING
- [Pagination 심화](examples/paginationadvanced): 기본 pager, AJAX 전환, 무한 스크롤
- [다중 DB 연결](examples/multidb): 런타임 DB 그룹, 두 SQLite 연결
- [이미지 처리](examples/imageprocess): resize/fit/rotate, 썸네일 생성
- [암호화 & 해싱](examples/encryption): bcrypt, password_verify, 해싱 vs 암호화

## 실전 예제

- [게시판 CRUD](examples/board): 완성형 게시판 + AI 3단계 스팸 감지 (규칙/StopForumSpam/Groq AI)
…

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