(PECL apc >= 3.0.13)
apc_add — Cache a new variable in the data store
$ttl= 0 ] )
$unused= NULL [, int
$ttl= 0 ]] )
Caches a variable in the data store, only if it's not already stored.
Замечание: Unlike many other mechanisms in PHP, variables stored using apc_add() will persist between requests (until the value is removed from the cache).
Store the variable using this name.
keys 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().)
The variable to store
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.).
Names in key, variables in value.
Returns TRUE if something has effectively been added into the cache, FALSE otherwise. Second syntax returns array with error keys.
Пример #1 A apc_add() example
$bar = 'BAR';
$bar = 'NEVER GETS SET';
Результат выполнения данного примера:
string(3) "BAR" string(3) "BAR"