shm_remove

(PHP 4, PHP 5)

shm_remove — Removes shared memory from Unix systems

说明

bool shm_remove ( resource $shm_identifier )

shm_remove() removes the shared memory shm_identifier. All data will be destroyed.

参数

shm_identifier: The shared memory identifier as returned by shm_attach()

返回值

成功时返回 TRUE，或者在失败时返回 FALSE.

参见

shm_remove_var() - Removes a variable from shared memory

PHP手册 - N: Removes shared memory from Unix systems

用户评论:

aaron DURP segura DURP gmail DURP com (20-Aug-2006 12:55)

It appears that you must be connected to the shm segment in order to remove it. <?php shm_remove($shm); shm_detach($shm); ?> works, while <?php shm_detach($shm); shm_remove($shm); ?> produces "Warning: shm_remove(): The parameter is not a valid shm_identifier ..."

cu at ulakbim dot gov dot tr (30-Dec-1999 04:30)

Though it says **shm_identifier** in int shm_remove(int shm_identifier); and shm_attach() returns an **id** that that can be used to access the System V... a snippet like this: <?php $key = 1234; $shm=shm_attach($key); // do whatever... shm_remove($shm); ?> produces an error like Warning: 2(which is the value of $shm) is not a existing SysV shared memory key in /usr/cu/web/sema.php on line 44... The documentation confused me a bit. I thought shm_remove would get the shm handle/id that returns from shm_attach, not the key given to shm_attach. So, use instead: shm_remove($key); which is what is intended indeed.