<?PHP
set_time_limit(10);
$commonProtocol = getprotobyname("tcp");
$socket = socket_create(AF_INET, SOCK_STREAM, $commonProtocol);
if ($socket) {
$result = socket_bind($socket, 'localhost', 1337);
if ($result) {
　 $result = socket_listen($socket, 5);
　 if ($result) {
　　echo "监听成功";
　 }
}
}else{
echo "监听失败";
}
do {
if (($msgsock = socket_accept($socket))) { /* 发送提示信息给连接上来的用户 */
　 $msg = "==========================================rn" .
　 "Welcome to the PHP Test Server. rnrn" .
　 "To quit, type 'quit'. rn" .
　 "To shut down the server type 'shutdown'.rn" .
　 "To get help message type 'help'.rn" .
　 "==========================================rn" .
　 "php>";
}
socket_write($msgsock, $msg, strlen($msg));
do {
　 $buf = socket_read($msgsock, 2048, PHP_BINARY_READ);
　 if (false === $buf) {
　　echo "socket_read() failed: reason: " . socket_strerror($result) . "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 ($buf == 'q') {
　　break;
　 } /* 客户端输入shutdown命令时候服务端和客户端都关闭 */
　 if ($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 == 'h') {
　　$msg = " PHP Server Help Message rnrn" .
　　" To quit, type 'quit'. rn" .
　　" To shut down the server type 'shutdown'.rn" .
　　" To get help message type 'help'.rn" .
　　"php> ";
　　socket_write($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'.rnphp> ";
　 socket_write($msgsock, $talkback, strlen($talkback));
　 echo "$bufn";
} while (true);
socket_close($msgsock);
}while (true);
/* 关闭Socket连接 */
socket_close($socket);
?>

(责任编辑：admin)