php共享内存shmop初探

<?php /**
  * SHMOP共享内存操作示例
  * @author monkee
 **/
$key = 0x4337b700;
$size = 4096;
$shmid = @shmop_open($key, &#39;c&#39;, 0644, $size);
if($shmid === FALSE){
	exit(&#39;shmop_open error!&#39;);
}

$data = &#39;世界，你好！我将写入很多的数据，你能罩得住么？&#39;;

$length = shmop_write($shmid, pack(&#39;a*&#39;,$data), 0);
if($length === FALSE){
	exit(&#39;shmop_write error!&#39;);
}

@shmop_close($shmid);

exit(&#39;succ&#39;);
?>

<?php /**
  * SHMOP共享内存操作示例
  * @author monkee
 **/
$key = 0x4337b700;
$size = 256;
$shmid = @shmop_open($key, &#39;c&#39;, 0644, $size);
if($shmid === FALSE){
	exit(&#39;shmop_open error!&#39;);
}

$data = unpack(&#39;a*&#39;, shmop_read($shmid, 0, 256));
if($data === FALSE){
	exit(&#39;shmop_read error!&#39;);
}
@shmop_close($shmid);

exit($data[1]);
?>