apc_add

(PECL apc:3.0.13-3.0.14)

apc_add — Cache a variable in the data store (only if it's not stored)

설명

bool apc_add ( string $key , mixed $var [, int $ttl ] )

Note: Unlike many other mechanisms in PHP, variables stored using apc_add() will persist between requests (until the value is removed from the cache).

매개변수

key: Store the variable using this name. key s are cache-unique, so attempting to use apc_add() to store data with a key that already exists will not overwrite the existing data, and will instead return FALSE. (This is the only difference between apc_add() and apc_store().)
var: The variable to store
ttl: Time To Live; store var in the cache for ttl seconds. After the ttl has passed, the stored variable will be expunged from the cache (on the next request). If no ttl is supplied (or if the ttl is 0), the value will persist until it is removed from the cache manually, or otherwise fails to exist in the cache (clear, restart, etc.).

반환값

성공할 경우 TRUE를, 실패할 경우 FALSE를 반환합니다.

예제

Example#1 A apc_add() example


<?php
$bar = 'BAR';
apc_add('foo', $bar);
var_dump(apc_fetch('foo'));
echo "\n";
$bar = 'NEVER GETS SET';
apc_add('foo', $bar);
var_dump(apc_fetch('foo'));
echo "\n";
?>

위 예제의 출력:

string(3) "BAR"
string(3) "BAR"

참고

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apc_cache_info

APC

Last updated: Sun, 25 Nov 2007