shmop_size

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

shmop_size — Get size of shared memory block

说明

shmop_size ( resource $shmid ) : int

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

参数

shmid

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

范例

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.