apcu_store
(PECL apcu >= 4.0.0)
apcu_store — Cache a variable in the data store
Описание
Cache a variable in the data store.
Замечание: Unlike many other mechanisms in PHP, variables stored using apcu_store() will persist between requests (until the value is removed from the cache).
Список параметров
-
key -
Store the variable using this name.
keys are cache-unique, so storing a second value with the samekeywill overwrite the original value. -
var -
The variable to store
-
ttl -
Time To Live; store
varin the cache forttlseconds. After thettlhas passed, the stored variable will be expunged from the cache (on the next request). If nottlis supplied (or if thettlis 0), the value will persist until it is removed from the cache manually, or otherwise fails to exist in the cache (clear, restart, etc.). -
values -
Names in key, variables in value.
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Second syntax returns array with error keys.
Примеры
Пример #1 A apcu_store() example
<?php
$bar = 'BAR';
apcu_store('foo', $bar);
var_dump(apcu_fetch('foo'));
?>
Результат выполнения данного примера:
string(3) "BAR"
Смотрите также
- apcu_add() - Cache a new variable in the data store
- apcu_fetch() - Fetch a stored variable from the cache
- apcu_delete() - Removes a stored variable from the cache
Коментарии
Be careful when updating same key with ttl set during same request. For example:
<?php
for ($i = 0; $i < 20; $i++) {
apcu_store('test', $i, 10);
sleep(1);
}
?>
After 10 seconds the key will become not available and won't be updated. Tested on Windows and Linux platforms. Not sure if it's a bug or undocumented behavior.