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(PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8)
shmop_read — Read data from shared memory block
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 或者在失败时返回 false.
| 版本 | 说明 |
|---|---|
| 8.0.0 |
shmop expects a Shmop
instance now; previously, a resource was expected.
|
示例 #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.
