shmop_size

(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)

shmop_size — Get size of shared memory block

说明

shmop_size(Shmop $shmop): int

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

参数

shmop

The shared memory block identifier created by shmop_open()

返回值

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

更新日志

版本 说明
8.0.0 shmop expects a Shmop instance now; previously, a resource was expected.

示例

示例 #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.