stream_socket_pair
(PHP 5 >= 5.1.0)
stream_socket_pair — 创建一对完全一样的网络套接字连接流
说明
array stream_socket_pair
( int $domain
, int $type
, int $protocol
)
stream_socket_pair() 创建一对完全一样的网络套接字连接,这个函数通常会被用在进程间通信(Inter-Process Communication)
参数
domain
      
       使用的协议族: STREAM_PF_INET,
       STREAM_PF_INET6 or
       STREAM_PF_UNIX
      
type
      
       通信类型:
       STREAM_SOCK_DGRAM,
       STREAM_SOCK_RAW,
       STREAM_SOCK_RDM,
       STREAM_SOCK_SEQPACKET or
       STREAM_SOCK_STREAM
      
protocol
      
       使用的传输协议: STREAM_IPPROTO_ICMP,
       STREAM_IPPROTO_IP,
       STREAM_IPPROTO_RAW,
       STREAM_IPPROTO_TCP or
       STREAM_IPPROTO_UDP
      
Note: Please consult the Streams constant list for further details on each constant.
返回值
   如果成功将返回一个数组包括了两个socket资源,错误时返回FALSE
  
更新日志
版本 说明 5.3.0 这个函数在windows平台不可用
范例
Example #1 A stream_socket_pair() example
This example shows the basic usage of stream_socket_pair() in Inter-Process Comunication.
<?php
$sockets = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP);
$pid = pcntl_fork();
if ($pid == -1) {
die('could not fork');
} else if ($pid) {
/* parent */
fclose($sockets[0]);
fwrite($sockets[1], "child PID: $pidn");
echo fgets($sockets[1]);
fclose($sockets[1]);
} else {
/* child */
fclose($sockets[1]);
fwrite($sockets[0], "message from childn");
echo fgets($sockets[0]);
fclose($sockets[0]);
}
?>
以上例程的输出类似于:
child PID: 1378 message from child