shm_has_var
PHP 5 >= 5.3.0, PHP 7, PHP 8
shm_has_var - Check whether a specific entry exists
Manual
shm_has_var(
SysvSharedMemory$shm,
int$key ): bool
Checks whether a specific key exists inside a shared memory segment.
Parameters
- shm
-
A shared memory segment obtained from shm_attach.
- key
-
The variable key.
Return Values
Returns true if the entry exists, otherwise false
Changelog
| Version | Description |
| 8.0.0 | shm expects a SysvSharedMemory instance now; previously, a resource was expected. |