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shmop_read

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

shmop_read — Read data from shared memory block

Description

代码语言:javascript
复制
string shmop_read ( resource $shmid , int $start , int $count )

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

Parameters

shmid

The shared memory block identifier created by shmop_open()

start

Offset from which to start reading

count

The number of bytes to read

Return Values

Returns the data or FALSE on failure.

Changelog

Version

Description

7.0.0

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

Examples

Example #1 Reading shared memory block

代码语言:javascript
复制
<?php
$shm_data?=?shmop_read($shm_id,?0,?50);
?>

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

See Also

  • shmop_write() - Write data into shared memory block

← shmop_open

shmop_size →

代码语言:txt
复制
 ? 1997–2017 The PHP Documentation Group

Licensed under the Creative Commons Attribution License v3.0 or later.

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