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shm_has_var

(PHP 5 >= 5.3.0, PHP 7)

shm_has_varCheck whether a specific entry exists

Description

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.

See Also

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