stream_socket_pair

(PHP 5 >= 5.1.0)

stream_socket_pair — Creates a pair of connected, indistinguishable socket streams

说明

array stream_socket_pair ( int $domain , int $type , int $protocol )

stream_socket_pair() creates a pair of connected, indistinguishable socket streams. This function is commonly used in IPC (Inter-Process Communication).

参数

domain: The protocol family to be used: STREAM_PF_INET, STREAM_PF_INET6 or STREAM_PF_UNIX
type: The type of communication to be used: STREAM_SOCK_DGRAM, STREAM_SOCK_RAW, STREAM_SOCK_RDM, STREAM_SOCK_SEQPACKET or STREAM_SOCK_STREAM
protocol: The protocol to be used: 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

Returns an array with the two socket resources on success, or FALSE on failure.

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]);
}

?>

上例的输出类似于：

child PID: 1378
message from child


	PHP5中文手册 stream_socket_get_name stream_socket_recvfrom Streams PHP Manual stream_socket_pair (PHP 5 >= 5.1.0) stream_socket_pair — Creates a pair of connected, indistinguishable socket streams 说明 array stream_socket_pair ( int `$domain` , int `$type` , int `$protocol` ) stream_socket_pair() creates a pair of connected, indistinguishable socket streams. This function is commonly used in IPC (Inter-Process Communication). 参数 `domain` The protocol family to be used: `STREAM_PF_INET`, `STREAM_PF_INET6` or `STREAM_PF_UNIX` `type` The type of communication to be used: `STREAM_SOCK_DGRAM`, `STREAM_SOCK_RAW`, `STREAM_SOCK_RDM`, `STREAM_SOCK_SEQPACKET` or `STREAM_SOCK_STREAM` `protocol` The protocol to be used: `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 Returns an array with the two socket resources on success, or `FALSE` on failure. 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]); } ?> 上例的输出类似于： child PID: 1378 message from child stream_socket_get_name stream_socket_recvfrom Streams PHP Manual