shm_put_var

(PHP 4, PHP 5, PHP 7, PHP 8)

shm_put_var — Inserts or updates a variable in shared memory

Description

shm_put_var(SysvSharedMemory $shm, int $key, mixed $value): bool

shm_put_var() inserts or updates the value with the given key.

Warnings (E_WARNING level) will be issued if shm is not a valid SysV shared memory index or if there was not enough shared memory remaining to complete your request.

Parameters

shm

A shared memory segment obtained from shm_attach().

key

The variable key.

value

The variable. All variable types that serialize() supports may be used: generally this means all types except for resources and some internal objects that cannot be serialized.

Return Values

Returns true on success or false on failure.

Changelog

Version Description
8.0.0 shm expects a SysvSharedMemory instance now; previously, a resource was expected.

See Also