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 或者在失败时返回 FALSE.
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.
参见
- shmop_write() - Write data into shared memory block
