php中socket的用法详解

本文实例详细讲述了php中socket的用法，分享给大家供大家参考。具体用法如下：

一、开启socket

phpinfo();查看是否开启了socket扩展，否则在php.ini中开启。

二、服务器端代码的写法

<?php

error_reporting(E_ALL);

set_time_limit(0);

//ob_implicit_flush();
$address = '127.0.0.1';

$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='red'>server send:welcome</font><br/>";

 socket_write($msgsock, $msg, strlen($msg));

 echo 'read client message\n';

 $buf = socket_read($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 'send success';

 }

 socket_close($msgsock);

} while(true);

//关闭socket

socket_close($sock);

?>

服务器端需要在cli模式是执行，有可能cli模式下php.ini文件载入的不一样

可以像如下输出：

这时候在zhoxh目录下就有个tem.text文件。查看 Configuration File (php.ini) Path => C:\WINDOWS 。不是我的php.ini 文件，这说明调用的php.ini文件时错误的。这时候我们要指定php.ini文件命令如下

注意的是我的php可以直接执行时配置了环境变量。

三、客户端

<?php

//error_reporting(E_ALL);

echo "<h2>tcp/ip connection </h2>\n";

$service_port = 10005;

$address = '127.0.0.1';
$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: 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";

 
执行结果如下：
server:

client:

希望本文所述对大家的PHP程序设计有所帮助。