shm_attach

(PHP 4, PHP 5)

shm_attach — Creates or open a shared memory segment


Описание

resource shm_attach ( int $key [, int $memsize [, int $perm = 0666 ]] )

shm_attach() returns an id that can be used to access the System V shared memory with the given key, the first call creates the shared memory segment with memsize and the optional perm-bits 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.


Список параметров

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.


Возвращаемые значения

Returns a shared memory segment identifier.




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Описание на ru2.php.net
Описание на php.ru