PHP实现web socket长链接流程详解（php做购物车）燃爆了

$socket=stream_socket_server(‘tcp://’.$ipServer.’:’.$portNumber, $errno, $errstr);
while($conn=@stream_socket_accept($socket,$nbSecondsIdle))
{
$message=fread($conn, 1024);
send($conn,$message);
//@todo
//连接成功，有要保持连接，用来接收客户端发送过来的数据包 这里可以把这个连接$conn 保存在内存当中，通过Select or Swoole 事件去loop
fputs ($conn, “OK\n”);
}
function send($socket,$buffer){
$Sec_WebSocket_Key=”;
if (\preg_match(“/Sec-WebSocket-Key: *(.*?)\r\n/i”, $buffer, $match)) {
$Sec_WebSocket_Key=$match[1];
}
$new_key=\base64_encode(\sha1($Sec_WebSocket_Key . “258EAFA5-E914-47DA-95CA-C5AB0DC85B11″, true));
$handshake_message=”HTTP/1.1 101 Switching Protocols\r\n”
.”Upgrade: websocket\r\n”
.”Sec-WebSocket-Version: 13\r\n”
.”Connection: Upgrade\r\n”
.”Sec-WebSocket-Accept: ” . $new_key . “\r\n”;
$handshake_message .=”\r\n”;
var_dump($handshake_message);//打印握手信息，然后发送给客户端，建立完整连接
//socket_write($socket,$handshake_message);
$len=@\fwrite($socket, $handshake_message);
return 0;
}