PHP实现Socket通讯
1. 客户端
$host = gethostbyname('www.sina.cn');
$port = 80;
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_connect($socket, $host, $port);
$send = "HEAD / HTTP/1.1\r\nHost: www.sina.cn\r\nConnection: Close\r\n\r\n";
socket_write($socket, $send, strlen($send));
$result = '';
while( True ){
$bytes = socket_recv($socket, $buf, 2048, MSG_WAITALL);
if(empty($buf)){
break;
}else{
$result .= $buf;
}
}
socket_close($socket);
echo $result;
2. 服务端
set_time_limit(0);
$address = '127.0.0.1';
$port = 9999;
$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if( $sock === false) {
echo "socket_create() failed : " . socket_strerror(socket_last_error()) . "\n";
}else{
if (socket_bind($sock, $address, $port) === false) {
echo "socket_bind() failed : " . socket_strerror(socket_last_error($sock)) . "\n";
}else{
if (socket_listen($sock, 5) === false) {
echo "socket_bind() failed : " . socket_strerror(socket_last_error($sock)) . "\n";
}
while(true){
$msgsock = socket_accept($sock);
if ($msgsock === false) {
echo "socket_accepty() failed : ".socket_strerror(socket_last_error($sock)) . "\n";
}else{
$msg = "<font color='red'>server send:welcome</font><br/>";
socket_write($msgsock, $msg, strlen($msg));
$buf = socket_read($msgsock, 8192);
$talkback = "received message:$buf\n";
if (false === socket_write($msgsock, $talkback, strlen($talkback))) {
echo "socket_write() failed : " . socket_strerror(socket_last_error($sock)) ."\n";
}
}
socket_close($msgsock);
};
}
}
//关闭socket
socket_close($sock);