socket_listen(3) [php man page]

SOCKET_LISTEN(3)							 1							  SOCKET_LISTEN(3)

socket_listen - Listens for a connection on a socket

SYNOPSIS

       bool socket_listen (resource  $socket, [int  $backlog])

DESCRIPTION

	After  the  socket  $socket  has been created using socket_create(3) and bound to a name with socket_bind(3), it may be told to listen for
       incoming connections on $socket.

       socket_listen(3) is applicable only to sockets of type SOCK_STREAM or SOCK_SEQPACKET.

PARAMETERS

	      o $socket
		- A valid socket resource created with socket_create(3).

	      o $backlog
		- A maximum of $backlog incoming connections will be queued for processing. If a connection request arrives with  the  queue  full
		the  client  may  receive an error with an indication of ECONNREFUSED, or, if the underlying protocol supports retransmission, the
		request may be ignored so that retries may succeed.

	      Note

		      The maximum number passed to the $backlog parameter highly depends on the underlying platform.  On  Linux,  it  is  silently
		     truncated	to  SOMAXCONN.	On win32, if passed SOMAXCONN, the underlying service provider responsible for the socket will set
		     the backlog to a maximum reasonable value. There is no standard provision to find out the actual backlog value on this  plat-
		     form.

RETURN VALUES

	Returns  TRUE  on  success  or	FALSE  on  failure.  The error code can be retrieved with socket_last_error(3). This code may be passed to
       socket_strerror(3) to get a textual explanation of the error.

SEE ALSO

       socket_accept(3), socket_bind(3), socket_connect(3), socket_create(3), socket_strerror(3).

PHP Documentation Group 													  SOCKET_LISTEN(3)

SOCKET_BIND(3)								 1							    SOCKET_BIND(3)

socket_bind - Binds a name to a socket

SYNOPSIS

       bool socket_bind (resource  $socket, string  $address, [int  $port])

DESCRIPTION

	Binds  the  name  given  in  $address  to the socket described by $socket. This has to be done before a connection is be established using
       socket_connect(3) or socket_listen(3).

PARAMETERS

	      o $socket
		- A valid socket resource created with socket_create(3).

	      o $address
		- If the socket is of the AF_INET family, the $address is an IP in dotted-quad notation (e.g.  127.0.0.1).  If the  socket  is	of
		the AF_UNIX family, the $address is the path of a Unix-domain socket (e.g.  /tmp/my.sock).

	      o $port (Optional)
		- The $port parameter is only used when binding an AF_INET socket, and designates the port on which to listen for connections.

RETURN VALUES

	Returns TRUE on success or FALSE on failure.

	The  error  code can be retrieved with socket_last_error(3). This code may be passed to socket_strerror(3) to get a textual explanation of
       the error.

EXAMPLES

       Example #1

	      Using socket_bind(3) to set the source address

	      <?php
	      // Create a new socket
	      $sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);

	      // An example list of IP addresses owned by the computer
	      $sourceips['kevin']    = '127.0.0.1';
	      $sourceips['madcoder'] = '127.0.0.2';

	      // Bind the source address
	      socket_bind($sock, $sourceips['madcoder']);

	      // Connect to destination address
	      socket_connect($sock, '127.0.0.1', 80);

	      // Write
	      $request = 'GET / HTTP/1.1' . "
" .
			 'Host: example.com' . "

";
	      socket_write($sock, $request);

	      // Close
	      socket_close($sock);

	      ?>

NOTES

       Note

	       This function must be used on the socket before socket_connect(3).

       Note

	       Windows 9x/ME compatibility note: socket_last_error(3) may return an invalid error code if trying to bind the  socket  to  a  wrong
	      address that does not belong to your machine.

SEE ALSO

       socket_connect(3), socket_listen(3), socket_create(3), socket_last_error(3), socket_strerror(3).

PHP Documentation Group 													    SOCKET_BIND(3)