php 一段 shmop

 1 $size = 1024*1024;
 2 
 3 $shm_key = ftok(__FILE__, 't');
 4 
 5 $shm_id = shmop_open($shm_key, "c", 0644, $size);
 6 
 7 $id = sem_get($shm_key);
 8 
 9 $data = shmop_read($shm_id, 0, $size);
10 
11 $arr = array(
12         'time'=>time(),
13         'data'=>uniqid()
14     );
15 
16 $size = shmop_write($shm_id, json_encode($arr), 0);
17 
18 $data = shmop_read($shm_id, 0, $size);
19 sem_release($id);