PHP 5.4.31 Released

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_UNIXSTREAM_SOCK_STREAMSTREAM_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

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