(PHP 4 >= 4.0.4, PHP 5, PHP 7)
shmop_size — Get size of shared memory block
$shmid
)shmop_size() is used to get the size, in bytes of the shared memory block.
Returns an int, which represents the number of bytes the shared memory block occupies.
Example #1 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.