一开始对socket不太理解，做起东西很模糊，后来做过定位请求的项目，对socket的理解更清楚了。 贴一下示例代码： SERVER端 <?php //确保在连接客户端时不会超时 set_time_limit (0 );//设置IP和端口号 $address = '127.0.0.1' ;$port = 2009 ; //调试的时候，可以多换端口来测试程序！ //创建一个SOCKET if (($sock = socket_create (AF_INET , SOCK_STREAM , SOL_TCP ))< 0 ){ echo "socket_create() 失败的原因是:" . socket_strerror ($sock ). "<br>" ;} //绑定到socket端口 if (($ret = socket_bind ($sock , $address , $port ))< 0 ){ echo "socket_bind() 失败的原因是:" . socket_strerror ($ret ). "<br>" ;} //开始监听 if (($ret = socket_listen ($sock , 4 ))< 0 ){ echo "socket_listen() 失败的原因是:" . socket_strerror ($ret ). "<br>" ;} do { if (($msgsock = socket_accept ($sock )) < 0 ){ echo "socket_accept() failed: reason: " . socket_strerror ($msgsock ) . " \n " ;break ;} //发到客户端 $msg = "<font color=red>欢迎进入服务器！</font><br>" ;socket_write ($msgsock , $msg , strlen ($msg ));echo "读取客户端发来的信息<br>" ;$buf = socket_read ($msgsock , 8192 );$talkback = "收到的信息: $buf <br>" ;echo $talkback ;/* if(socket_write($msgsock, $talkback, strlen($talkback))<0) { echo "socket_write() failed: reason: " . socket_strerror($msgsock) . "\n"; } else { echo "发送成功"; }*/ //echo $buf; socket_close ($msgsock );} while (true );socket_close ($sock );?> CLIENT端 <?php error_reporting (E_ALL );set_time_limit (0 );echo "<h2>TCP/IP Connection</h2> \n " ;$service_port = 2009 ;$address = "127.0.0.1" ;$socket = socket_create (AF_INET , SOCK_STREAM , SOL_TCP );if ($socket < 0 ){ echo "socket_create() failed: reason: " . socket_strerror ($socket ) . " \n " ;} else { echo "OK. \n " ;} echo "试图连接 ' $address ' 端口 ' $service_port '...<br>" ;$result = socket_connect ($socket , $address , $service_port );if ($result < 0 ){ echo "socket_connect() failed. \n Reason: ( $result ) " . socket_strerror ($result ) . " \n " ;} else { echo "连接OK<br>" ;} $in = "Hello \r\n " ;$in .= "我是Chester \r\n " ;$out = '' ;$out1 = '' ;if (! socket_write ($socket , $in , strlen ($in ))){ echo "socket_write() failed: reason: " . socket_strerror ($socket ) . " \n " ;} else { echo "发送到服务器信息成功！<br>" ;echo "发送的内容为:<font color='red'> $in </font> <br>" ;} while ($out = socket_read ($socket , 8192 )){ echo "接收服务器回传信息成功！<br>" ;echo "接受的内容为:" , $out ;} echo "关闭SOCKET...<br>" ;socket_close ($socket );echo "关闭OK<br>" ;?> 先运行server.php
再运行client.php
