shm_has_var
(PHP 5 >= 5.3.0, PHP 7)
shm_has_var — Check whether a specific entry exists
설명
bool shm_has_var
( resource
$shm_identifier
, int $variable_key
)Checks whether a specific key exists inside a shared memory segment.
반환값
Returns TRUE if the entry exists, otherwise FALSE
참고
- shm_get_var() - Returns a variable from shared memory
- shm_put_var() - Inserts or updates a variable in shared memory
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