shm_has_var
(PHP 5 >= 5.3.0)
shm_has_var — Check whether a specific entry exists
Description
bool shm_has_var
( resource $shm_identifier
, int $variable_key
)
Checks whether a specific key exists inside a shared memory segment.
Parameters
- shm_identifier
-
Shared memory segment, obtained from shm_attach().
- variable_key
-
The variable key.
Return Values
Returns TRUE if the entry exists, otherwise FALSE
See Also
- shm_get_var() - Returns a variable from shared memory
- shm_put_var() - Inserts or updates a variable in shared memory