1、修改php.ini，打开extension=php_sockets.dll
2、服务端程序socketserver.php
<?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 = 3046;
/**
* 创建一个socket
* af_inet=是ipv4 如果用ipv6，则参数为 af_inet6
* sock_stream为socket的tcp类型，如果是udp则使用sock_dgram
*/
$sock = socket_create(af_inet, sock_stream, sol_tcp) or die("socket_create() fail:" . socket_strerror(socket_last_error()) . "/n");
//阻塞模式
socket_set_block($sock) or die("socket_set_block() fail:" . socket_strerror(socket_last_error()) . "/n");
//绑定到socket端口
$result = socket_bind($sock, $address, $port) or die("socket_bind() fail:" . socket_strerror(socket_last_error()) . "/n");
//开始监听
$result = socket_listen($sock, 4) or die("socket_listen() fail:" . socket_strerror(socket_last_error()) . "/n");
echo "ok\nbinding the socket on $address:$port ... ";
echo "ok\nnow ready to accept connections.\nlistening on the socket ... \n";
do { // never stop the daemon
//它接收连接请求并调用一个子连接socket来处理客户端和服务器间的信息
$msgsock = socket_accept($sock) or die("socket_accept() failed: reason: " . socket_strerror(socket_last_error()) . "/n");
while(1){
//读取客户端数据
echo "read client data \n";
//socket_read函数会一直读取客户端数据,直到遇见\n,\t或者\0字符.php脚本把这写字符看做是输入的结束符.
$buf = socket_read($msgsock, 8192);
echo "received msg: $buf \n";
if($buf == "bye"){
//接收到结束消息，关闭连接，等待下一个连接
socket_close($msgsock);
continue;
}
//数据传送 向客户端写入返回结果
$msg = "welcome \n";
socket_write($msgsock, $msg, strlen($msg)) or die("socket_write() failed: reason: " . socket_strerror(socket_last_error()) ."/n");
}
} while (true);
socket_close($sock);
?>
3、客户端程序socketclient.php
<?php
set_time_limit(0);
$host = "127.0.0.1";
$port = 3046;
$socket = socket_create(af_inet, sock_stream, sol_tcp)or die("could not create socket\n");
$connection = socket_connect($socket, $host, $port) or die("could not connet server\n");
socket_write($socket, "hello socket") or die("write failed\n");
while ($buff = socket_read($socket, 1024, php_normal_read)) {
echo("response was:" . $buff . "\n");
echo("input what you want to say to the server:\n");
$text = fgets(stdin);
socket_write($socket, $text);
}
socket_close($socket);
?>
4、测试
运行服务端程序：c:\wamp\bin\php\php5.4.16\php.exe c:\wamp\www\socketserver.php
运行客户端程序： c:\wamp\bin\php\php5.4.16\php.exe c:\wamp\www\socketclient.php
5、其流程与c很相似，实际上就是封装了c的socket。
以上就是详细介绍php编写tcp服务端和客户端程序的代码案例的详细内容。