NTP Server Query Script Help

[Sooty3]

Does anyone have an example of a currently working script to get the time from an NTP server? I have found several old fsockopen scripts like http://www.kloth.net/software/timesrv1.php and http://www.xenocafe.com/tutorials/php/ntp_time_synchronization/index.php but I can't get any of them to work, either on my shared hosting or local XAMPP. I'm using valid server addresses (can get time from them with Python) but all I get with the php scripts are timeouts.

[bradgrafelman]

Can you show us the PHP error message from the "timeouts" you're seeing?

Also, just for clarity, can you post the PHP script you tried?

EDIT: Also also, welcome to PHPBuilder! 🙂

[Sooty3]

Thank you for replying. The script I have tried most recently came from here.

<?php
 // ******************************************************
 // * NTP Interface Class for PHP                        *
 // *  (Written by Brian Haase on June 22, 2004          *
 // *                                                    *
 // ******************************************************

 class NTP_Core
 {
    var $Server;
    var $Port = 13;
    var $Timeout = 30;

var $Time = "";
var $Timestamp = 0;

var $Error = "";

function lookup( $Server )
{
   $this->Error = "";
   $this->Server = $Server;

   $_Success = FALSE;
   $_Time = "";

   $_Timeout = time();

   $Fp = @fsockopen( $this->Server, $this->Port, $errno, $errstr, $this->Timeout );

   if ( !$Fp )
   {
      $this->Error = $errno . " : " . $errstr;
      return FALSE;
   }

   for ( ; time() <= ($_Timeout + $this->Timeout) ; )
   {
      $_Time .= fgets( $Fp, 2096 );
      if ( feof( $Fp ) ) break;
   }

   if ( $Fp ) fclose( $Fp );

   if ( $_Time <> "" )
   {
      $this->Time = trim($_Time);
      return TRUE;
   }

   $this->Error = "N/A : NTP PHP Class Socket Timeout";
   return FALSE;
}

function format( )
{
   // Tue Jun 22 07:19:36 UTC 2004
   // Tue Jun 22 07:19:51 2004

   $_Fields = explode( ' ', $this->Time );
   $_Subfields = explode( ':', $_Fields[3] );

   // Discard the day of week - $_Fields[0];
   $Month = $_Fields[1];
   $Day = $_Fields[2];
   $Hour = $_Subfields[0];
   $Min = $_Subfields[1];
   $Sec = $_Subfields[2];

   if ( count( $_Fields ) == 6 ) {
     $Zone = $_Fields[4];
     $Year = $_Fields[5];
   } else {
     $Zone = "";
     $Year = $_Fields[4];
   }

   $MTable = array( "", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" );
   $Month = array_search( $Month, $MTable );

   $this->Timestamp = mktime( $Hour, $Min, $Sec, $Month, $Day, $Year );

   return TRUE;
}
 }
?>

and the test script updated to use a known good server pool.ntp.org. I have tried ports 13, 37, and 123.

<?php
 //
 // Basic Example Script for the NTP Class Module
 //
 // ::: KEEP IN MIND, THE CLASS DOES NOT YET HANDLE TIMEZONE CONVERSIONS :::
 /// Depending on the server you use, you will need to apply your own GMT conversion to the timestamp.
 //

 require "ntp.class.php";

 // Create the Class
 $NTP = new NTP_Core;

 // Request the time from a NTP Server


 $Result = $NTP->lookup( "pool.ntp.org" );

 if ( $Result == TRUE )
 {
    // Output the Server Time
    echo "<B>Server Time: </B>" . $NTP->Time . "<BR>\n";

// Try to reformat the time into a useable timestamp
if ( $NTP->Format() )
{
   echo "<B>Formatted: </B>" . date('l dS of F Y h:i:s A', $NTP->Timestamp);
}
else
{
   echo "Bogus Time Format - Unable to Format.";
}
 }
 else
 {

and the timeout message:

NTP Time Lookup Failed - 10060 : A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.