shmop_read

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

shmop_readRead data from shared memory block

说明

string shmop_read ( resource $shmid , int $start , int $count )

shmop_read() will read a string from shared memory block.

参数

shmid

The shared memory block identifier created by shmop_open()

start

Offset from which to start reading

count

The number of bytes to read

返回值

Returns the data 或者在失败时返回 FALSE.

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 Reading shared memory block

<?php
$shm_data 
shmop_read($shm_id050);
?>

This example will read 50 bytes from shared memory block and place the data inside $shm_data.

参见