(PHP 4 >= 4.0.4, PHP 5, PHP 7)
shmop_read — Read data from shared memory block
$count) : string
shmop_read() will read a string from shared memory block.
The shared memory block identifier created by shmop_open()
Offset from which to start reading
The number of bytes to read. 0 reads
shmop_size($shmid) - $startbytes.
Returns the data 或者在失败时返回
Example #1 Reading shared memory block
$shm_data = shmop_read($shm_id, 0, 50);
This example will read 50 bytes from shared memory block and place the data inside $shm_data.
- shmop_write() - Write data into shared memory block