php中socket的用法實例詳解

這篇文章主要介紹了php中socket的用法,詳細講述了PHP進行socket通信的完整步驟,非常具有參考借鑒價值,需要的朋友可以參考下

本文實例詳細講述了php中socket的用法，分享給大家參考。具體用法如下：

一、開啟socket

phpinfo();查看是否開啟了socket擴展，否則在php.ini中開啟。

二、伺服器端程式碼的寫法

 程式碼如下:

<?php
error_reporting(E_ALL);
set_time_limit(0);
//ob_implicit_flush();
$address = &#39;127.0.0.1&#39;;
$port = 10005;
//创建端口
if( ($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) === false) {
 echo "socket_create() failed :reason:" . socket_strerror(socket_last_error()) . "\n";
}
//绑定
if (socket_bind($sock, $address, $port) === false) {
 echo "socket_bind() failed :reason:" . socket_strerror(socket_last_error($sock)) . "\n";
}
//监听
if (socket_listen($sock, 5) === false) {
 echo "socket_bind() failed :reason:" . socket_strerror(socket_last_error($sock)) . "\n";
}
do {
 //得到一个链接
 if (($msgsock = socket_accept($sock)) === false) {
  echo "socket_accepty() failed :reason:".socket_strerror(socket_last_error($sock)) . "\n";
  break;
 }
 //welcome  发送到客户端
 $msg = "<font color=&#39;red&#39;>server send:welcome</font><br/>";
 socket_write($msgsock, $msg, strlen($msg));
 echo &#39;read client message\n&#39;;
 $buf = socket_read($msgsock, 8192);
 $talkback = "received message:$buf\n";
 echo $talkback;
 if (false === socket_write($msgsock, $talkback, strlen($talkback))) {
  echo "socket_write() failed reason:" . socket_strerror(socket_last_error($sock)) ."\n";
 } else {
  echo &#39;send success&#39;;
 }
 socket_close($msgsock);
} while(true);
//关闭socket
socket_close($sock);
?>

伺服器端需要在cli模式是執行，有可能cli模式下php .ini檔案載入的不一樣

可以像如下輸出：

這時候在zhoxh目錄下就有個tem.text檔案。查看 Configuration File (php.ini) Path => C:\WINDOWS 。不是我的php.ini 文件，這說明呼叫的php.ini檔案時錯誤的。這時候我們要指定php.ini檔案指令如下

注意的是我的php可以直接執行時配置了環境變數。

三、客戶端

程式碼如下:

<?php
//error_reporting(E_ALL);
echo "<h2>tcp/ip connection </h2>\n";
$service_port = 10005;
$address = &#39;127.0.0.1&#39;;
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket === false) {
 echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
} else {
 echo "OK. \n";
}
echo "Attempting to connect to &#39;$address&#39; on port &#39;$service_port&#39;...";
$result = socket_connect($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: localhost \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, 8192)) {
 echo $out;
}
echo "closeing socket..";
socket_close($socket);
echo "ok .\n\n";

執行結果如下：
server:

client:

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