shm_get_var
PHP function
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(PHP 4, PHP 5, PHP 7, PHP 8)
Returns a variable from shared memory
Description
shm_get_var(SysvSharedMemory $shm, int $key): mixed
shm_get_var() returns the variable with a given key, in the given shared memory segment. The variable is still present in the shared memory.
Parameters
shmA shared memory segment obtained from
shm_attach().keyThe variable key.
Return Values
Returns the variable with the given key. If the key does not exist, an E_WARNING is raised and false is returned.
Errors/Exceptions Shm-detached-error
Changelog
| Version | Description |
|---|---|
| 8.0.0 | shm expects a SysvSharedMemory instance now; previously, a resource was expected. |