shmop_open
shmop_size
Shared Memory Functions
PHP Manual

# shmop_read

(PHP 4 >= 4.0.4, PHP 5)

shmop_read — Read data from shared memory block

### Description

string shmop_read ( int `$shmid` , int `$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.

### 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() - Write data into shared memory block

shmop_open
shmop_size
Shared Memory Functions
PHP Manual