Web студия "GrandView"

Description

bool shm_remove ( int shm_identifier )

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

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shm_remove

aaron DURP segura DURP gmail DURP com
19-Aug-2006 04:55


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
29-Dec-1999 08:30


Though it says **shm_identifier** in

<PRE>

  int shm_remove(int shm_identifier);

</PRE>

and

<PRE>

  shm_attach() returns an **id** that that can be used to access the System V...

</PRE>

a snippet like this:

<PRE>

  $key = 1234;

  $shm=shm_attach($key);

  // do whatever...

  shm_remove($shm);

</PRE>

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:

<PRE>

  shm_remove($key);

</PRE>

which is what is intended indeed.

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