(PHP 5 >= 5.1.0, PHP 7)
stream_socket_pair — 创建一对完全一样的网络套接字连接流
$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)
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.
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
| 版本 | 说明 |
|---|---|
| 5.3.0 | 这个函数在windows平台不可用 |
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: $pid\n");
echo fgets($sockets[1]);
fclose($sockets[1]);
} else {
/* child */
fclose($sockets[1]);
fwrite($sockets[0], "message from child\n");
echo fgets($sockets[0]);
fclose($sockets[0]);
}
?>
以上例程的输出类似于：
child PID: 1378 message from child