shm_has_var
(PHP 5 >= 5.3.0, PHP 7)
shm_has_var — Check whether a specific entry exists
Descrierea
shm_has_var
( SysvSharedMemory
$shm
, int $key
) : boolChecks whether a specific key exists inside a shared memory segment.
Valorile întoarse
Returns true if the entry exists, otherwise false
Istoricul schimbărilor
| Versiune | Descriere |
|---|---|
| 8.0.0 |
shm expects a SysvSharedMemory
instance now; previously, a resource was expected.
|
A se vedea și
- shm_get_var() - Returns a variable from shared memory
- shm_put_var() - Inserts or updates a variable in shared memory
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