Example of operating TCP and socket functions in PHP

Create a Socket service
$c =stream_socket_server ("tcp://127.0.0.1:1100");
while (1)
{
if (Is_resource ($a =stream_socket_accept ($c))
{
Do something time-consuming
Get Network socket name
if (Stream_socket_get_name ($a, true)!==false)
{
Fwrite ($a, "regards form Berlin");
}
}
}

//

Create two no-difference socket data stream connections
$sockets =stream_socket_pair (STREAM_PF_UNIX,STREAM_SOCK_STREAM,STREAM_IPPROTO_IP);
To create a child process and return its PID
$pid =pcntl_fork ();
if ($pid ==-1)
{
If there are no child processes
Die (' could not fork ');
}
else if ($pid)
{
/* Parent Process * *
Fclose ($sockets [0]);
Fwrite ($sockets [1], "Child pid: $pidn");
Echo fgets ($sockets [1]);
Fclose ($sockets [1]);
}
Else
{
/* Child Process * *
Fclose ($sockets [1]);
Fwrite ($sockets [0], "message from CHILDN");
Echo fgets ($sockets [0]);
Fclose ($sockets [0]);
}

//

/* Open a Socket service side * *
$server =stream_socket_server (' tcp://127.0.0.1:1234 ');
/* Accept a connection * *
$socket =stream_socket_accept ($server);
/* GET Data * *
echo "Received Out-of-band:" ". Stream_socket_recvfrom ($socket, 1500,stream_oob)." n ";
* * Use PEEK to get data * *
echo "Data:". Stream_socket_recvfrom ($socket, 1500,stream_peek). "' n ";
/* Normal access number * *
echo "Data:". Stream_socket_recvfrom ($socket, 1500). "' n ";
/* Close socket*/
Fclose ($socket);
Fclose ($server);

//

/* Open a socket client * *
$socket =stream_socket_client (' tcp://127.0.0.1:1234 ');
/* Send normal data * *
Fwrite ($socket, "normal data transmit.");
* * Send more data.
Stream_socket_sendto ($socket, "out of band data.", Stream_oob);
/* Close socket*/
Fclose ($socket);

//

//Create server-side
$socket =stream_socket_server ("tcp://0.0.0.0:8000", $errno, $ERRSTR);
//If creation fails
if (! $socket)
{
  echo "$errstr ($errno) <br/>n";
}
//If creation succeeded
else
{
 //Accept Connection
  while ($conn =stream_socket_accept ($socket))
  {
& nbsp;  ///write Data
    fwrite ($conn, ' The local time '. Date (' n/j/y g:i a '). " n ");
   //close connection
    fclose ($conn);
 }
 //close socket
  Fclose ($socket);
}