shm_attach
(PHP 4, PHP 5)
shm_attach — Creates or open a shared memory segment
Description
int shm_attach
( int $key
[, int $memsize
[, int $perm
]] )
A second call to shm_attach() for the same
key
will return a different shared memory
identifier, but both identifiers access the same underlying
shared memory. memsize
and
perm
will be ignored.
Parameters
-
key
-
A numeric shared memory segment ID
-
memsize
-
The memory size. If not provided, default to the
sysvshm.init_mem in the php.ini, otherwise 10000
bytes.
-
perm
-
The optional permission bits. Default to 0666.
Return Values
Returns a shared memory segment identifier.
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