# shm_detach

(PHP 4, PHP 5, PHP 7)

shm_detach — Disconnects from shared memory segment

### 说明

shm_detach ( resource `$shm_identifier` ) : bool

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

### 参数

`shm_identifier`

  A shared memory resource handle as returned by shm_attach()

### 返回值

shm_detach() always returns `TRUE`.

### 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