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

$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);
?>