shm_detach

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

shm_detach — Disconnects from shared memory segment

说明

shm_detach ( SysvSharedMemory $shm ) : bool

shm_detach() disconnects from the shared memory given by the shm created by shm_attach(). Remember, that shared memory still exist in the Unix system and the data is still present.

参数

shm: A shared memory segment obtained from shm_attach().

返回值

成功时返回 true，或者在失败时返回 false。

更新日志

版本	说明
8.0.0	`shm` expects a SysvSharedMemory instance now; previously, a resource was expected.

参见

shm_attach() - Creates or open a shared memory segment
shm_remove() - Removes shared memory from Unix systems
shm_remove_var() - Removes a variable from shared memory

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