PHP下socket编程
下面是一些简单的例子，在命令行运行php脚本就行
[命令行运行PHP]PHP中有一个php.exe文件，可以用命令执行PHP脚本。如：D:/php.exe -f F:/test.php ; 可以使用php.exe -h查看更多参数 ：
服务器端：
<?php
/**
* 服务器端代码
*
*/
//确保在连接客户端时不会超时
set_time_limit(0);
//设置IP和端口号
$address = "localhost";
$port = 1234; //调试的时候，可以多换端口来测试程序！
//创建一个SOCKET
if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false)
{
echo "socket_create() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n";
die;
}
//阻塞模式
if (socket_set_block($sock) == false)
{
echo "socket_set_block() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n";
die;
}
//绑定到socket端口
if (socket_bind($sock, $address, $port) == false)
{
echo "socket_bind() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n";
die;
}
//开始监听
if (socket_listen($sock, 4) == false)
{
echo "socket_listen() 失败的原因是:" . socket_strerror(socket_last_error()) . "/n";
die;
}
do
{
if (($msgsock = socket_accept($sock)) === false)
{
echo "socket_accept() failed: reason: " . socket_strerror(socket_last_error()) . "/n";
die;
}
//发到客户端
$msg = "welcome /n";
if (socket_write($msgsock, $msg, strlen($msg)) === false)
{
echo "socket_write() failed: reason: " . socket_strerror(socket_last_error()) ."/n";
die;
}
echo "读取客户端发来的信息/n";
$buf = socket_read($msgsock, 8192);
echo "收到的信息: $buf /n";
socket_close($msgsock);
} while (true);
socket_close($sock);
?>
客服端
<?php
/**
* 客户端代码
*/
error_reporting(0);
set_time_limit(0);
echo " TCP/IP Connection /n";
$service_port = 10001;
$address = '127.0.0.1';
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false)
{
die;
}
else
{
echo "OK";
}
echo "试图连接 ";
if (socket_connect($socket, $address, $service_port) == false)
{
$error = socket_strerror(socket_last_error());
echo "socket_connect() failed./n","Reason: {$error} /n";
die;
}
else
{
echo "连接OK/n";
}
$in = "Hello World/r/n";
if (socket_write($socket, $in, strlen($in)) === false)
{
echo "socket_write() failed: reason: " . socket_strerror(socket_last_error()) ."/n";
die;
}
else
{
echo "发送到服务器信息成功！/n","发送的内容为: $in /n";
}
$out = "";
while ($out = socket_read($socket, 8192))
{
echo "接受的内容为: ".$out;
}
echo "关闭SOCKET…/n";
socket_close($socket);
echo "关闭OK/n";
?>
下面是我自己的代码：这是一个PHP客户端测试程序，目的是与服务器连接，将一个包体中的内容发给服务器，服务器查询数据库，然后将结果返还给客户端
<?
$clientfd = socket_create(AF_INET, SOCK_STREAM, 0);
if($clientfd == -1)
{
printf("failed to create socket!\n");
}
$server_port = 63214;
$server_addr = "10.1.1.65";
if((socket_connect($clientfd, $server_addr, $server_port)) === false)
{
echo "failed to connect!\n";
die;
}
else
{
echo "succeed to connect!\n";
}
$pkg_len = 18;
$cmd_id = 1;
$user_id =100;
$buf = pack("LLSLL", $pkg_len, 0, $cmd_id, 0, $user_id);
if(socket_write($clientfd, $buf, strlen($buf)) === false)
{
echo "failed to send!\n";
}
else
{
echo "succeed to send message to the server!\n";
if(($result = socket_read($clientfd, 63214)))
{
$res = unpack($result);
echo "succeed to receive data from the server:$server_addr\n";--
echo "the result is :$res[1]\n";
}
else
{
echo "failed to receive data from the server:$server_addr\n";
}
}