function get_next_serial($curr_serial, $today = '')
{
// Zone transfer to zone slave(s) will occur only if the serial number
// of the SOA RR is arithmetically greater that the previous one
// (as defined by RFC-1982).
// The serial should be updated, unless:
// - the serial is set to "0", see http://doc.powerdns.com/types.html#id482176
//
// - set a fresh serial ONLY if the existing serial is lower than the current date
//
// - update date in serial if it reaches limit of revisions for today or do you
// think that ritual suicide is better in such case?
//
// "This works unless you will require to make more than 99 changes until the new
// date is reached - in which case perhaps ritual suicide is the best option."
// http://www.zytrax.com/books/dns/ch9/serial.html
if ($today == '') {
set_timezone();
$today = date('Ymd');
}
$revision = (int) substr($curr_serial, -2);
$ser_date = substr($curr_serial, 0, 8);
if ($curr_serial == '0') {
$serial = $curr_serial;
} elseif ($curr_serial == $today . '99') {
$serial = get_next_date($today) . '00';
} else {
if (strcmp($today, $ser_date) === 0) {
// Current serial starts with date of today, so we need to update the revision only.
++$revision;
} elseif (strncmp($today, $curr_serial, 8) === -1) {
// Reuse existing serial date if it's in the future
$today = substr($curr_serial, 0, 8);
// Get next date if revision reaches maximum per day (99) limit otherwise increment the counter
if ($revision == 99) {
$today = get_next_date($today);
$revision = "00";
} else {
++$revision;
}
} else {
// Current serial did not start of today, so it's either an older
// serial, therefore set a fresh serial
$revision = "00";
}
// Create new serial out of existing/updated date and revision
$serial = $today . str_pad($revision, 2, "0", STR_PAD_LEFT);
}
return $serial;
}
/** Get Next Serial
*
* Zone transfer to zone slave(s) will occur only if the serial number
* of the SOA RR is arithmetically greater that the previous one
* (as defined by RFC-1982).
*
* The serial should be updated, unless:
*
* - the serial is set to "0", see http://doc.powerdns.com/types.html#id482176
*
* - set a fresh serial ONLY if the existing serial is lower than the current date
*
* - update date in serial if it reaches limit of revisions for today or do you
* think that ritual suicide is better in such case?
*
* "This works unless you will require to make more than 99 changes until the new
* date is reached - in which case perhaps ritual suicide is the best option."
* http://www.zytrax.com/books/dns/ch9/serial.html
*
* @param string $curr_serial Current Serial No
* @param string $today Optional date for "today"
*
* @return string Next serial number
*/
function get_next_serial($curr_serial, $today = '')
{
// Autoserial
if ($curr_serial == 0) {
return 0;
}
// Serial number could be a not date based
if ($curr_serial < 1979999999) {
return $curr_serial + 1;
}
// Reset the serial number, Bind was written in the early 1980s
if ($curr_serial == 1979999999) {
return 1;
}
if ($today == '') {
set_timezone();
$today = date('Ymd');
}
$revision = (int) substr($curr_serial, -2);
$ser_date = substr($curr_serial, 0, 8);
if ($curr_serial == '0') {
$serial = $curr_serial;
} elseif ($curr_serial == $today . '99') {
$serial = get_next_date($today) . '00';
} else {
if (strcmp($today, $ser_date) === 0) {
// Current serial starts with date of today, so we need to update the revision only.
++$revision;
} elseif (strncmp($today, $curr_serial, 8) === -1) {
// Reuse existing serial date if it's in the future
$today = substr($curr_serial, 0, 8);
// Get next date if revision reaches maximum per day (99) limit otherwise increment the counter
if ($revision == 99) {
$today = get_next_date($today);
$revision = "00";
} else {
++$revision;
}
} else {
// Current serial did not start of today, so it's either an older
// serial, therefore set a fresh serial
$revision = "00";
}
// Create new serial out of existing/updated date and revision
$serial = $today . str_pad($revision, 2, "0", STR_PAD_LEFT);
}
return $serial;
}
$events_next_month = array();
$insert = false;
while ($row = mysql_fetch_object($result)) {
switch ($row->repeat) {
case -1:
$string = $row->repeat_special . " " . date("Y");
//$string = str_replace("of ","",$string); // PHP 5.2 doesn't deal with 'of' in the relative date format
$date_this_year = date("Y-m-d H:i:s", strtotime($string));
$insert = true;
break;
case 0:
$date_this_year = $row->when;
$insert = true;
break;
case 1:
$date_this_year = get_next_date($row->when);
$insert = true;
break;
case 2:
// no need right now
break;
case 3:
// no need right now
break;
}
if ($insert) {
list($date, $time) = explode(" ", $date_this_year);
list($year, $month, $day) = explode("-", $date);
if (strtotime("{$year}-{$month}") == strtotime(date("Y-m"))) {
$events_this_month[] = array(date("Y") . "-{$month}-{$day}", $row->id);
}