apcu_exists
PECL apcu >= 4.0.0
apcu_exists - Checks if entry exists
Manual
apcu_exists(
mixed$keys ): mixed
Checks if one or more APCu entries exist.
Parameters
- keys
-
A string, or an array of strings, that contain keys.
Return Values
Returns true if the key exists, otherwise false Or if an array was passed to keys, then an array is returned that contains all existing keys, or an empty array if none exist.