shmop_size

Get size of shared memory block

&reftitle.description; `int` `shmop_size` `Shmop` `shmop`

`shmop_size` is used to get the size, in bytes of the shared memory block.

&reftitle.parameters;

`shmop`

- The shared memory block identifier created by `shmop_open`

&reftitle.returnvalues;

Returns an int, which represents the number of bytes the shared memory block occupies.

&reftitle.changelog;

&Version; | &Description;
8.0.0 | `shmop` expects a `Shmop` instance now; previously, a `resource` was expected.

&reftitle.examples;

### Getting the size of the shared memory block

    <?php
    $shm_size = shmop_size($shm_id);
    ?>

This example will put the size of shared memory block identified by `$shm_id` into `$shm_size`.