php中socket使用

首先查看phpinfo()是否开启了socket。
代码方面包括一个server端和一个客户端：

1、server端（server.php）

<?php
error_reporting(E_ALL & ~E_NOTICE);
set_time_limit(0);
//ob_implicit_flush();

$address = '127.0.0.1';
$port = 10005;
//创建端口
if( ($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
        echo "socket_create() failed :reason:" . socket_strerror(socket_last_error()) . "\n";
}

//绑定
if (socket_bind($sock, $address, $port) === false) {
        echo "socket_bind() failed :reason:" . socket_strerror(socket_last_error($sock)) . "\n";
}

//监听
if (socket_listen($sock, 5) === false) {
        echo "socket_listen() failed :reason:" . socket_strerror(socket_last_error($sock)) . "\n";
}

do {
        //得到一个链接
        if (($msgsock = socket_accept($sock)) === false) {
                echo "socket_accept() failed :reason:".socket_strerror(socket_last_error($sock)) . "\n";
                break;
        }
        $sendmessage = socket_read($msgsock, 8192);
        echo "message : <$sendmessage>  from client\n";


        $msg = "welcome to socket server";
        socket_write($msgsock, $msg, strlen($msg));
        socket_close($msgsock);
} while(true);
//关闭socket
socket_close($sock)

2、客户端（client.php）

<?php
//error_reporting(E_ALL);
$service_port = 10005;
$address = '127.0.0.1';

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) {
        echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
}
$result = socket_connect($socket, $address, $service_port);
if($result === false) {
        echo "socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";
}
$in = "hello socket server";
socket_write($socket, $in, strlen($in));

echo "Reading response:\n";
while ($out = socket_read($socket, 8192)) {
        echo $out."\n";
}
socket_close($socket)

在服务端用cli方式执行。然后执行客户端，就可以进行socket交互了。
要是服务器间请求，注意下端口是否开启，服务器间网络是否畅通。