(PHP 5 >= 5.1.0)
stream_socket_pair — 創建一對完全一樣的網絡套接字連接流
說明
array stream_socket_pair ( int$domain
, int $type
, int $protocol
)
stream_socket_pair() 創建一對完全一樣的網絡套接字連接,這個函數通常會被用在進程間通信(Inter-Process Communication)
參數
domain
使用的協議族: STREAM_PF_INET
,
STREAM_PF_INET6
or
STREAM_PF_UNIX
type
通信類型:
STREAM_SOCK_DGRAM
,
STREAM_SOCK_RAW
,
STREAM_SOCK_RDM
,
STREAM_SOCK_SEQPACKET
or
STREAM_SOCK_STREAM
protocol
使用的傳輸協議: 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
如果成功將返回一個數組包括了兩個socket資源,錯誤時返回FALSE
更新日志
版本 說明 5.3.0 這個函數在windows平臺不可用
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: $pidn");
echo fgets($sockets[1]);
fclose($sockets[1]);
} else {
/* child */
fclose($sockets[1]);
fwrite($sockets[0], "message from childn");
echo fgets($sockets[0]);
fclose($sockets[0]);
}
?>
以上例程的輸出類似于:
child PID: 1378 message from child