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PHP Manual :: shm_has_var



shm_get_var || shm_put_var || Semaphore Functions || PHP Manual

(PHP 5 >= 5.3.0, PHP 7)

shm_has_varCheck whether a specific entry exists

Description

bool shm_has_var ( resource $shm_identifier , int $variable_key )

Checks whether a specific key exists inside a shared memory segment.

Parameters

shm_identifier

Shared memory segment, obtained from shm_attach().

variable_key

The variable key.

Return Values

Returns TRUE if the entry exists, otherwise FALSE

See Also



shm_get_var || shm_put_var || Semaphore Functions || PHP Manual
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