shmop_read
(PHP 4 >= 4.0.4, PHP 5)
shmop_read — Read data from shared memory block
说明
string shmop_read
( int $shmid
, int $start
, int $count
)
shmop_read() will read a string from shared memory block.
参数
- shmid
-
The shared memory block identifier created by shmop_open()
- start
-
Offset from which to start reading
- count
-
The number of bytes to read
返回值
Returns the data or FALSE on failure.
范例
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.
