If the cache already contains such a key, the existing value and
expiration time will be replaced with the new ones, respectively.
public set ( mixed $key, mixed $value, integer $duration = null, yii\caching\Dependency $dependency = null ) : boolean | ||
$key | mixed | a key identifying the value to be cached. This can be a simple string or a complex data structure consisting of factors representing the key. |
$value | mixed | the value to be cached |
$duration | integer | default duration in seconds before the cache will expire. If not set, default [[ttl]] value is used. |
$dependency | yii\caching\Dependency | dependency of the cached item. If the dependency changes, the corresponding value in the cache will be invalidated when it is fetched via [[get()]]. This parameter is ignored if [[serializer]] is false. |
return | boolean | whether the value is successfully stored into cache |