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This document uses PHP Chinese website manual Release
(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
$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 ) {
fclose ( $sockets [ 0 ]);
fwrite ( $sockets [ 1 ], "child PID: $pid \n" );
echo fgets ( $sockets [ 1 ]);
fclose ( $sockets [ 1 ]);
} else {
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