stream_socket_pair
(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
说明
stream_socket_pair (
int
$domain ,
int $type ,
int $protocol ) :
array
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_INET6orSTREAM_PF_UNIX -
type -
通信类型:
STREAM_SOCK_DGRAM,STREAM_SOCK_RAW,STREAM_SOCK_RDM,STREAM_SOCK_SEQPACKETorSTREAM_SOCK_STREAM -
protocol -
使用的传输协议:
STREAM_IPPROTO_ICMP,STREAM_IPPROTO_IP,STREAM_IPPROTO_RAW,STREAM_IPPROTO_TCPorSTREAM_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: $pid\n");
echo fgets($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
