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(PHP Extension) Get Current Date/Time from NIST Time ServerDemonstrates using Chilkat Socket to connect to an NIST time server and (using the old Time Protocol (RFC 868)), will read the current GMT time. Note: This is not necessarily the very best means for getting the current date/time. The most commonly used time protocol is the Network Time Protocol (RFC-1305).
<?php include("chilkat_9_5_0.php"); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $socket = new CkSocket(); // Connect to an NIST time server and read the current date/time $maxWaitMs = 4000; $useTls = false; $success = $socket->Connect('time-c.nist.gov',37,$useTls,$maxWaitMs); if ($success != true) { print $socket->lastErrorText() . "\n"; exit; } // The time server will send a big-endian 32-bit integer representing // the number of seconds since since 00:00 (midnight) 1 January 1900 GMT. // The ReceiveInt32 method will receive a 4-byte integer, but returns // true or false to indicate success. If successful, the integer // is obtained via the ReceivedInt property. $bigEndian = true; $success = $socket->ReceiveInt32($bigEndian); if ($success != true) { print $socket->lastErrorText() . "\n"; exit; } $dt = new CkDateTime(); $dt->SetFromNtpTime($socket->get_ReceivedInt()); // Show the current local date/time $bLocalTime = true; print 'Current local date/time: ' . $dt->getAsRfc822($bLocalTime) . "\n"; $maxWaitMs = 10; $socket->Close($maxWaitMs); ?> |
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