Zend_TimeSync_Ntp Class Reference

Public Member Functions
	__construct ($timeserver, $port=123)
	NTP class constructor, sets the timeserver and port number.
Public Member Functions inherited from Zend_TimeSync_Protocol
	getInfo ()
	Return information sent/returned from the timeserver.
	getDate ($locale=null)
	Query this timeserver without using the fallback mechanism.

Protected Member Functions
	_prepare ()
	Prepare local timestamp for transmission in our request packet.
	_getInteger ($input)
	Calculates a 32bit integer.
	_getFloat ($input)
	Calculates a 32bit signed fixed point number.
	_getTimestamp ($input)
	Calculates a 64bit timestamp.
	_read ()
	Reads the data returned from the timeserver.
	_write ($data)
	Sends the NTP packet to the server.
	_extract ($binary)
	Extracts the binary data returned from the timeserver.
Protected Member Functions inherited from Zend_TimeSync_Protocol
	_prepare ()
	Abstract method that prepares the data to send to the timeserver.
	_read ()
	Abstract method that reads the data returned from the timeserver.
	_write ($data)
	Abstract method that writes data to to the timeserver.
	_extract ($data)
	Abstract method that extracts the binary data returned from the timeserver.
	_connect ()
	Connect to the specified timeserver.
	_disconnect ()
	Disconnects from the peer, closes the socket.

Protected Attributes
	$_port = 123
Protected Attributes inherited from Zend_TimeSync_Protocol
	$_socket
	$_exceptions
	$_timeserver
	$_info = array()

Constructor & Destructor Documentation

__construct	(		$timeserver,
			$port = 123
	)

NTP class constructor, sets the timeserver and port number.

Parameters

string	$timeserver	Adress of the timeserver to connect to
integer	$port	(Optional) Port for this timeserver

Member Function Documentation

_extract (   $binary )

protected

Extracts the binary data returned from the timeserver.

Parameters

string | array

$binary

Data returned from the timeserver

Returns

integer Difference in seconds

_getFloat (   $input )

protected

Calculates a 32bit signed fixed point number.

Parameters

string

$input

Returns

float

_getInteger (   $input )

protected

Calculates a 32bit integer.

Parameters

string

$input

Returns

integer

_getTimestamp (   $input )

protected

Calculates a 64bit timestamp.

Parameters

string

$input

Returns

float

_prepare ( )

protected

Prepare local timestamp for transmission in our request packet.

NTP timestamps are represented as a 64-bit fixed-point number, in seconds relative to 0000 UT on 1 January 1900. The integer part is in the first 32 bits and the fraction part in the last 32 bits

Returns

string

_read ( )

protected

Reads the data returned from the timeserver.

This will return an array with binary data listing:

Returns

array

Exceptions

Zend_TimeSync_Exception

When timeserver can not be connected

_write (   $data )

protected

Sends the NTP packet to the server.

Parameters

string

$data

Data to send to the timeserver

Returns

void

Member Data Documentation

$_port = 123

protected