PHP 8.1.15 Released!

范例

示例 #1 Socket 举例:简单的 TCP/IP 服务器

这个例子展示了一个简单的对讲服务器。更改 addressport 以满足设置和执行。 可以使用类似于这样的命令连接到服务器:telnet 192.168.1.53 10000(address 和 port 匹配刚才的设置)。 输入的任何东西都会在服务器端进行输出,并回显。要断开连接,请输入 “quit”。

#!/usr/local/bin/php -q
<?php
error_reporting
(E_ALL);

/* 允许脚本等待连接。 */
set_time_limit(0);

/* 打开绝对刷送,这样就可以看到接收了什么。 */
ob_implicit_flush();

$address = '192.168.1.53';
$port = 10000;

if ((
$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
echo
"socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
}

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

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

do {
if ((
$msgsock = socket_accept($sock)) === false) {
echo
"socket_accept() failed: reason: " . socket_strerror(socket_last_error($sock)) . "\n";
break;
}
/* 发送说明。 */
$msg = "\nWelcome to the PHP Test Server. \n" .
"To quit, type 'quit'. To shut down the server type 'shutdown'.\n";
socket_write($msgsock, $msg, strlen($msg));

do {
if (
false === ($buf = socket_read($msgsock, 2048, PHP_NORMAL_READ))) {
echo
"socket_read() failed: reason: " . socket_strerror(socket_last_error($msgsock)) . "\n";
break
2;
}
if (!
$buf = trim($buf)) {
continue;
}
if (
$buf == 'quit') {
break;
}
if (
$buf == 'shutdown') {
socket_close($msgsock);
break
2;
}
$talkback = "PHP: You said '$buf'.\n";
socket_write($msgsock, $talkback, strlen($talkback));
echo
"$buf\n";
} while (
true);
socket_close($msgsock);
} while (
true);

socket_close($sock);
?>

示例 #2 Socket 举例:简单的 TCP/IP 客户端

这个例子展示了一个简单的,一次性的 HTTP 客户端。 它只是连接到一个页面,提交一个 HEAD 请求,输出回复,然后退出。

<?php
error_reporting
(E_ALL);

echo
"<h2>TCP/IP Connection</h2>\n";

/* 获取 WWW 服务的 port。 */
$service_port = getservbyname('www', 'tcp');

/* 获取目标主机的 IP 地址。 */
$address = gethostbyname('www.example.com');

/* 创建 TCP/IP 套接字。 */
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if (
$socket === false) {
echo
"socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
} else {
echo
"OK.\n";
}

echo
"Attempting to connect to '$address' on port '$service_port'...";
$result = socket_connect($socket, $address, $service_port);
if (
$result === false) {
echo
"socket_connect() failed.\nReason: ($result) " . socket_strerror(socket_last_error($socket)) . "\n";
} else {
echo
"OK.\n";
}

$in = "HEAD / HTTP/1.1\r\n";
$in .= "Host: www.example.com\r\n";
$in .= "Connection: Close\r\n\r\n";
$out = '';

echo
"Sending HTTP HEAD request...";
socket_write($socket, $in, strlen($in));
echo
"OK.\n";

echo
"Reading response:\n\n";
while (
$out = socket_read($socket, 2048)) {
echo
$out;
}

echo
"Closing socket...";
socket_close($socket);
echo
"OK.\n\n";
?>

add a note

User Contributed Notes 3 notes

up
81
javier,javiern at gmail dot com
10 years ago
You can easily extend the first example to handle any number of connections instead of jsut one

#!/usr/bin/env php
<?php
error_reporting
(E_ALL);

/* Permitir al script esperar para conexiones. */
set_time_limit(0);

/* Activar el volcado de salida implícito, así veremos lo que estamo obteniendo
* mientras llega. */
ob_implicit_flush();

$address = '127.0.0.1';
$port = 10000;

if ((
$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
    echo
"socket_create() falló: razón: " . socket_strerror(socket_last_error()) . "\n";
}

if (
socket_bind($sock, $address, $port) === false) {
    echo
"socket_bind() falló: razón: " . socket_strerror(socket_last_error($sock)) . "\n";
}

if (
socket_listen($sock, 5) === false) {
    echo
"socket_listen() falló: razón: " . socket_strerror(socket_last_error($sock)) . "\n";
}

//clients array
$clients = array();

do {
   
$read = array();
   
$read[] = $sock;
   
   
$read = array_merge($read,$clients);
   
   
// Set up a blocking call to socket_select
   
if(socket_select($read,$write = NULL, $except = NULL, $tv_sec = 5) < 1)
    {
       
//    SocketServer::debug("Problem blocking socket_select?");
       
continue;
    }
   
   
// Handle new Connections
   
if (in_array($sock, $read)) {       
       
        if ((
$msgsock = socket_accept($sock)) === false) {
            echo
"socket_accept() falló: razón: " . socket_strerror(socket_last_error($sock)) . "\n";
            break;
        }
       
$clients[] = $msgsock;
       
$key = array_keys($clients, $msgsock);
       
/* Enviar instrucciones. */
       
$msg = "\nBienvenido al Servidor De Prueba de PHP. \n" .
       
"Usted es el cliente numero: {$key[0]}\n" .
       
"Para salir, escriba 'quit'. Para cerrar el servidor escriba 'shutdown'.\n";
       
socket_write($msgsock, $msg, strlen($msg));
       
    }
   
   
// Handle Input
   
foreach ($clients as $key => $client) { // for each client       
       
if (in_array($client, $read)) {
            if (
false === ($buf = socket_read($client, 2048, PHP_NORMAL_READ))) {
                echo
"socket_read() falló: razón: " . socket_strerror(socket_last_error($client)) . "\n";
                break
2;
            }
            if (!
$buf = trim($buf)) {
                continue;
            }
            if (
$buf == 'quit') {
                unset(
$clients[$key]);
               
socket_close($client);
                break;
            }
            if (
$buf == 'shutdown') {
               
socket_close($client);
                break
2;
            }
           
$talkback = "Cliente {$key}: Usted dijo '$buf'.\n";
           
socket_write($client, $talkback, strlen($talkback));
            echo
"$buf\n";
        }
       
    }       
} while (
true);

socket_close($sock);
?>
up
1
Timofey Bugaevsky
1 month ago
Good example from Javier.

For using in docker container you can use 0 as an address:
$address = '0';

To broadcast a message to all clients, you can use socket_write() for all required clients:
...
    // Handle Input
    foreach ($clients as $key => $client) {
        if (in_array($client, $read)) {
            ...
            if ($buf == 'message') {
                $talkback = "$buf $key\n";
                foreach ($clients as $curClient) {
                    socket_write($curClient, $talkback, strlen($talkback));
                }
                continue;
            }
            ...
        }
    }
...
up
-2
zital at riseup dot net
5 years ago
due to PHP standars modify the code to:
<?php
//...
   
$write = NULL;
   
$except = NULL;
   
$tv_sec = 5;

   
// Set up a blocking call to socket_select
   
if(socket_select($read, $write, $except, $tv_sec) < 1)
//...
?>
To Top