shmop_size

(PHP 4 >= 4.0.4, PHP 5, PHP 7)

shmop_size — Get size of shared memory block

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shmop_size ( resource $shmid ) : int

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

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shmid

The shared memory block identifier created by shmop_open()

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

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7.0.0 The type of shmid has been changed from int to resource.

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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.