1 php
 2set_time_limit(0);
 3 4$ip = '127.0.0.1';
 5$port = 8888;
 6 7// 1. 创建 8if( ($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) == FALSE ){
 9echo 'create fail：' . socket_strerror(socket_last_error());
10}
1112// 2. 绑定13if ( socket_bind($sock, $ip, $port) == FALSE ) {
14echo 'bind fail：' . socket_strerror(socket_last_error());
15}
1617// 3. 监听18if( socket_listen($sock, 4) == FALSE ){
19echo 'listen fail：' . socket_strerror(socket_last_error());
20}
2122$count = 0;
2324do{
25// 4. 阻塞，等待客户端请求26if ( ($msgsock = socket_accept($sock)) == FALSE ) {
2728echo 'accept fail：' . socket_strerror(socket_last_error());
2930break;
31     } else {
3233// 5. 向客户端写入信息34$msg = 'server send successfully!';
35         socket_write($msgsock, $msg, strlen($msg));
363738// 5. 读取客户端信息39echo '-----test successfully!------';
40$buf = socket_read($msgsock, 8192);
414243$talkback = 'receive client: ' . $buf;
44echo$talkback;
454647if ($count >= 5) {
48break;
49        }
50    }
5152// 6. 关闭socket53     socket_close($msgsock);
5455 }while(true);
5657// 6. 关闭socket58 socket_close($sock);

php
error_reporting(E_ALL);
set_time_limit(0);


$ip = '127.0.0.1';
$port = 8888;

// 1. 创建$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

if( $socket == FALSE ) {
    echo 'create fail: ' . socket_strerror(socket_last_error());
} else {
    echo 'OK';
}

// 2. 链接echo 'we will try to connect ' . $ip .':' . $port . '\r\n----';
$result = socket_connect($socket, $ip, $port);
if ( $result == FALSE) {
    
}

$in = 'HO ';
$in .= 'first blood--------';
$out = '';

// 3. 向服务端写入if( !socket_write($socket, $in, strlen($in)) ) {
    echo 'write fail: ' . socket_strerror(socket_last_error());
} else {
    echo '-----send to server succefully! \r\n----';
    echo 'the content is ' . $in;
}

// 3. 从服务端读取while ( $out = socket_read($socket, 8129) ) {
    echo '-----receive from server succefully!\r\n------';
    echo 'the contents is ' . $out;
}

// 4. 关闭echo '----close socket ...';
socket_close($socket);
echo 'closed ok.';