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
复制代码代码如下:
<?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($sock)) ."\n";php实例代码详解
} else {
echo 'send success';
}
socket_close($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
复制代码代码如下:
<?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。

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