http_cache_etag
http_chunked_decode
HTTP 함수 목록
PHP Manual

# http_cache_last_modified

(PECL pecl_http >= 0.1.0)

http_cache_last_modified — Caching by last modification

### 설명

bool http_cache_last_modified ([ int `$timestamp_or_expires` ] )

Attempts to cache the sent entity by its last modification date.

If the supplied argument is greater than 0, it is handled as timestamp and will be sent as date of last modification. If it is 0 or omitted, the current time will be sent as Last-Modified date. If it's negative, it is handled as expiration time in seconds, which means that if the requested last modification date is not between the calculated timespan, the Last-Modified header is updated and the actual body will be sent.

A log entry will be written to the cache log if the INI 설정 http.log.cache is set and the cache attempt was successful.

> Note: 이 함수는 다음 함수와 함께 사용할 수 있습니다: http_send_data(), http_seld_file() 그리고 http_send_stream().

### 인수

`timestamp_or_expires`

  Unix timestamp

### 반환값

성공시 `FALSE`를 반환하거나 종료합니다. with 304 Not Modified if the entity is cached. "exits"의 의미에 대해서 INI 설정 http.force_exit를 참고하십시오.

### 예제

Example #1 A http_cache_last_modified() example

Caching for 5 seconds.

`<?php
http_cache_last_modified(-5);
printf("%s\n", http_date());
?>`

### 참고

- http_cache_etag() - Caching by ETag
- PHP 5.1.0 이상을 사용할 때 HttpResponse 클래스

http_cache_etag
http_chunked_decode
HTTP 함수 목록
PHP Manual