Shared Memory Functions
PHP Manual

shmop_read

Read data from shared memory block

Description

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

<?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