Php/docs/function.shmop-size

• PHP Manual
• Shared Memory 函数
• Get size of shared memory block

shmop_size

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

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.

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.