php Socket 入门例子

<?php
/* 设置不显示任何错误 */
error_reporting(0);
/* 脚本超时为无限 */
set_time_limit(0);
/* 开始固定清除 */
ob_implicit_flush();
/* 服务器端的IP和需要开放的端口 */
$address = '192.168.1.2';
$port = 10000;
/* 产生一个Socket */
if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) {
echo "socket_create() failed: reason: " . socket_strerror($sock) . "\n";
}
/* 把IP地址端口进行绑定 */
if (($ret = socket_bind($sock, $address, $port)) < 0) {
echo "socket_bind() failed: reason: " . socket_strerror($ret) . "\n";
}

/* 监听Socket连接 */
if (($ret = socket_listen($sock, 5)) < 0) {
echo "socket_listen() failed: reason: " . socket_strerror($ret) . "\n";
}
/* 永远循环监接受用户连接 */
do {
if (($msgsock = socket_accept($sock)) < 0) {
echo "socket_accept() failed: reason: " . socket_strerror($msgsock) . "\n";
break;
}
/* 发送提示信息给连接上来的用户 */
$msg = "==========================================\r\n" .
" Welcome to the PHP Test Server. \r\n\r\n".
" To quit, type 'quit'. \r\n" .
" To shut down the server type 'shutdown'.\r\n" .
" To get help message type 'help'.\r\n" .
"==========================================\r\n" .
"php> ";
socket_write($msgsock, $msg, strlen($msg));
do {
if (false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
echo "socket_read() failed: reason: " . socket_strerror($ret) . "\n";
break 2;
}
if (!$buf = trim($buf)) {
continue;
}
/* 客户端输入quit命令时候关闭客户端连接 */
if ($buf == 'quit') {
break;
}
/* 客户端输入shutdown命令时候服务端和客户端都关闭 */
if ($buf == 'shutdown') {
socket_close($msgsock);
break 2;
}
/* 客户端输入help命令时候输出帮助信息 */
if ($buf == 'help') {
$msg = " PHP Server Help Message \r\n\r\n".
" To quit, type 'quit'. \r\n" .
" To shut down the server type 'shutdown'.\r\n" .
" To get help message type 'help'.\r\n" .
"php> ";
socket_write($msgsock, $msg, strlen($msg));
continue;
}
/* 客户端输入命令不存在时提示信息 */
$talkback = "PHP: unknow command '$buf'.\r\nphp> ";
socket_write($msgsock, $talkback, strlen($talkback));
echo "$buf\n";
} while (true);
socket_close($msgsock);
} while (true);
/* 关闭Socket连接 */
socket_close($sock);
?>

运行方式：在客户端控制台连接 telnet 192.168.1.2 10000

来源：oschina

链接：https://my.oschina.net/u/130017/blog/14722