Read data from shared memory block

shmop_read(Shmop $shmop, int $offset, int $size): string

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

shmop: The shared memory block identifier created by shmop_open()
offset: Offset from which to start reading
size: The number of bytes to read. 0 reads shmop_size($shmid) - $start bytes.

Returns the data or false on failure.

Version	Description
8.0.0	`shmop` expects a Shmop instance now; previously, a resource was expected.

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.

shmop_read