60 lines
2.0 KiB
PHP
60 lines
2.0 KiB
PHP
<?php
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/**
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* @file timetool.php
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* @date 2018-09-26
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* @author Go Namhyeon <gnh1201@gmail.com>
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* @brief Time tools
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*/
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/* Query a time server (C) 1999-09-29, Ralf D. Kloth (QRQ.software) <ralf at qrq.de> */
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if(!check_function_exists("query_time_server")) {
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function query_time_server($timeserver, $socket) {
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// parameters: server, socket, error code, error text, timeout
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$fp = fsockopen($timeserver,$socket,$err,$errstr,5);
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if($fp) {
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fputs($fp, "\n");
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$timevalue = fread($fp, 49);
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fclose($fp); // close the connection
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} else {
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$timevalue = " ";
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}
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$ret = array();
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$ret[] = $timevalue;
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$ret[] = $err; // error code
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$ret[] = $errstr; // error text
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return $ret;
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}
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}
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if(!check_function_exists("get_server_time")) {
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function get_server_time($timeserver="time.bora.net") {
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$timestamp = false;
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$timercvd = query_time_server($timeserver, 37);
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//if no error from query_time_server
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if(!$timercvd[1]) {
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$timevalue = bin2hex($timercvd[0]);
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$timevalue = abs(HexDec('7fffffff') - HexDec($timevalue) - HexDec('7fffffff'));
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$timestamp = $timevalue - 2208988800; // convert to UNIX epoch time stamp
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//$datum = date("Y-m-d (D) H:i:s", $tmestamp - date("Z", $timestamp)); // incl time zone offset
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//$doy = (date("z", $tmestamp) + 1);
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//echo "Time check from time server ", $timeserver, " : [<font color=\"red\">",$timevalue,"</font>]";
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//echo " (seconds since 1900-01-01 00:00.00).<br>\n";
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//echo "The current date and universal time is ",$datum," UTC. ";
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//echo "It is day ",$doy," of this year.<br>\n";
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//echo "The unix epoch time stamp is $timestamp.<br>\n";
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//echo date("d/m/Y H:i:s", $timestamp);
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} else {
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//echo "Unfortunately, the time server $timeserver could not be reached at this time. ";
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//echo "$timercvd[1] $timercvd[2].<br>\n";
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set_error($timercvd[1] . " " . $timercvd[2]);
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show_errors();
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}
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return $timestamp;
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}
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}
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