通过PHP脚本连接到TCP/IP服务器

Question

我需要实现我的网站上一个PHP脚本，将做到以下几点：

1. 连接到远程服务器
2. 发送数据包到服务器
3. 从

一切都已经可配置在服务器端对数据包请求作出响应的服务器接收数据包，我只需要弄清楚如何使用PHP连接到TCP/IP服务器。

任何想法的方向看？

Answer 1

用PHP插座

轻松：

<?php 
$fp = fsockopen("www.example.com", 80, $errno, $errstr, 30); 
if (!$fp) { 
    echo "$errstr ($errno)<br />\n"; 
} else { 
    fwrite($fp, "You message"); 
    while (!feof($fp)) { 
     echo fgets($fp, 128); 
    } 
    fclose($fp); 
} 
?> 

更多 - http://php.net/manual/en/function.fsockopen.php

Answer 2

<?php 
error_reporting(E_ALL); 

/* Allow the script to hang around waiting for connections. */ 
set_time_limit(0); 

/* Turn on implicit output flushing so we see what we're getting 
* as it comes in. */ 
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; 
    } 
    /* Send instructions. */ 
    $msg = "\nWelcome to the PHP Test Server. \n" . 
     "To quit, type 'quit'. To shut down the server type 'shutdown'.\n"; 
    socket_write($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); 
?> 

this is just an example from net for further look documentation

连接到TCP服务器

$host="192.168.1.99"; 
    $port = 1234; // open a client connection 
    $fp = fsockopen ($host, $port, $errno, $errstr); 
    if (!$fp) { 
    $result = "Error: could not open socket connection"; 
    } 
    else { // get the welcome message fgets ($fp, 1024); // write the user string to the socket 
    fputs($fp, $message); // get the result $result .= fgets ($fp, 1024); // close the connection 
    fputs ($fp, "END"); 
    fclose ($fp); // trim the result and remove the starting ? 
    $result = trim($result); 
    $result = substr($result, 2); // now print it to the browser 
    } ?> 
    Server said: <? echo $result; ?>