shmop_size()

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

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

范例

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$shm_idinto$shm_size.