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  • shm_has_var()

    (PHP 5 >= 5.3.0, PHP 7)

    Check whether a specific entry exists

    说明

    shm_has_var(resource $shm_identifier,int $variable_key): bool

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

    参数

    $shm_identifier

    Shared memory segment, obtained from shm_attach().

    $variable_key

    The variable key.

    返回值

    Returns TRUE if the entry exists, otherwise FALSE

    参见

    上篇:shm_get_var()

    下篇:shm_put_var()