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php-rrule/src/RRule.php

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Initial commit
2015-06-23 11:31:18 +03:00
<?php
/**
* Implementation of RRULE as defined by RFC 5545.
*
* Heavily based on dateutil/rrule.py
*/
namespace RRule;
define(__NAMESPACE__.'\MAX_YEAR',date('Y', PHP_INT_MAX));
/**
* @return bool
*/
function not_empty($var)
{
return ! empty($var) || $var === 0 || $var === '0';
}
/**
* closure/goog/math/math.js:modulo
* Copyright 2006 The Closure Library Authors.
*
* The % operator in PHP returns the remainder of a / b, but differs from
* some other languages in that the result will have the same sign as the
* dividend. For example, -1 % 8 == -1, whereas in some other languages
* (such as Python) the result would be 7. This function emulates the more
* correct modulo behavior, which is useful for certain applications such as
* calculating an offset index in a circular list.
*
* @param int $a The dividend.
* @param int $b The divisor.
*
* @return int $a % $b where the result is between 0 and $b
* (either 0 <= x < $b
* or $b < x <= 0, depending on the sign of $b).
*/
function pymod($a, $b)
{
$x = $a % $b;
// If $x and $b differ in sign, add $b to wrap the result to the correct sign.
return ($x * $b < 0) ? $x + $b : $x;
}
/**
* @return bool
*/
function is_leap_year($year)
{
if ( $year % 4 !== 0 ) {
return false;
}
if ( $year % 100 !== 0 ) {
return true;
}
if ( $year % 400 !== 0 ) {
return false;
}
return true;
}
/**
* Main class.
*/
class RRule implements \Iterator, \ArrayAccess
{
// frequencies
public static $frequencies = ['SECONDLY','MINUTELY','HOURLY','DAILY','WEEKLY','MONTHLY','YEARLY'];
const SECONDLY = 0;
const MINUTELY = 1;
const HOURLY = 2;
const DAILY = 3;
const WEEKLY = 4;
const MONTHLY = 5;
const YEARLY = 6;
// weekdays numbered from 1 (ISO-8601 or date('N'))
public static $week_days = ['MO' => 1,'TU' => 2,'WE' => 3,'TH' => 4,'FR' => 5,'SA' => 6,'SU' => 7];
// original rule
protected $rule = array(
'DTSTART' => null,
'FREQ' => null,
'UNTIL' => null,
'COUNT' => null,
'INTERVAL' => 1,
'BYSECOND' => null,
'BYMINUTE' => null,
'BYHOUR' => null,
'BYDAY' => null,
'BYMONTHDAY' => null,
'BYYEARDAY' => null,
'BYWEEKNO' => null,
'BYMONTH' => null,
'BYSETPOS' => null,
'WKST' => 'MO'
);
// parsed and validated values
protected $dtstart = null;
protected $dtstart_ts = null;
protected $freq = null;
protected $until = null;
protected $count = null;
protected $interval = null;
protected $bysecond = null;
protected $byminute = null;
protected $byhour = null;
protected $byweekday = null;
protected $byweekday_relative = null;
protected $bymonthday = null;
protected $bymonthday_negative = null;
protected $byyearday = null;
protected $byweekno = null;
protected $bymonth = null;
protected $bysetpos = null;
protected $wkst = null;
// Public interface
/**
* Constructor
*/
public function __construct(array $parts)
{
// validate extra parts
$unsupported = array_diff_key($parts, $this->rule);
if ( ! empty($unsupported) ) {
throw new \InvalidArgumentException('Unsupported parameter(s): '.implode(',',array_keys($unsupported)));
}
$parts = array_merge($this->rule, $parts);
$this->rule = $parts; // save original rule
// WKST
$parts['WKST'] = strtoupper($parts['WKST']);
if ( ! array_key_exists($parts['WKST'], self::$week_days) ) {
throw new \InvalidArgumentException('The WKST rule part must be one of the following: '.implode(', ',array_keys(self::$week_days)));
}
$this->wkst = self::$week_days[$parts['WKST']];
// FREQ
$parts['FREQ'] = strtoupper($parts['FREQ']);
if ( ! in_array($parts['FREQ'], self::$frequencies) ) {
throw new \InvalidArgumentException('The FREQ rule part must be one of the following: '.implode(', ',self::$frequencies));
}
$this->freq = $parts['FREQ'];
// INTERVAL
$parts['INTERVAL'] = (int) $parts['INTERVAL'];
if ( $parts['INTERVAL'] < 1 ) {
throw new \InvalidArgumentException('The INTERVAL rule part must be a positive integer (> 0)');
}
$this->interval = (int) $parts['INTERVAL'];
// DTSTART
if ( not_empty($parts['DTSTART']) ) {
if ( is_string($parts['DTSTART']) ) {
$this->dtstart = $parts['DTSTART'];
$this->dtstart_ts = strtotime($parts['DTSTART']);
}
elseif ( $parts['DTSTART'] instanceof DateTime ) {
$this->dtstart = $parts['DTSTART']->format('Y-m-d');
$this->dtstart_ts = $parts['DTSTART']->getTimestamp();
}
elseif ( is_integer($parts['DTSTART']) ) {
$this->dtstart = date('Y-m-d',$parts['DTSTART']);
$this->dtstart_ts = $parts['DTSTART'];
}
if ( ! $this->dtstart_ts ) {
throw new \InvalidArgumentException('Cannot parse DTSTART - must be a valid date, timestamp or DateTime object');
}
}
else {
$this->dtstart = date('Y-m-d');
$this->dtstart_ts = strtotime($this->dtstart);
}
// UNTIL (optional)
if ( not_empty($parts['UNTIL']) ) {
if ( is_string($parts['UNTIL']) ) {
$this->until = $parts['UNTIL'];
}
elseif ( $parts['UNTIL'] instanceof DateTime ) {
$this->until = $parts['UNTIL']->format('Y-m-d');
}
elseif ( is_integer($parts['UNTIL']) ) {
$this->until = date('Y-m-d',$parts['UNTIL']);
}
if ( ! strtotime($this->until) ) {
throw new \InvalidArgumentException('Cannot parse UNTIL - must be a valid date, timestamp or DateTime object');
}
}
// COUNT (optional)
if ( not_empty($parts['COUNT']) ) {
$parts['COUNT'] = (int) $parts['COUNT'];
if ( $parts['COUNT'] < 1 ) {
throw new \InvalidArgumentException('COUNT must be a positive integer (> 0)');
}
$this->count = (int) $parts['COUNT'];
}
// infer necessary BYXXX rules from DTSTART, if not provided
if ( ! (not_empty($parts['BYWEEKNO']) || not_empty($parts['BYYEARDAY']) || not_empty($parts['BYMONTHDAY']) || not_empty($parts['BYDAY'])) ) {
switch ( $this->freq ) {
case 'YEARLY':
if ( ! not_empty($parts['BYMONTH']) ) {
$parts['BYMONTH'] = [date('m',$this->dtstart_ts)];
}
$parts['BYMONTHDAY'] = [date('j', $this->dtstart_ts)];
break;
case 'MONTHLY':
$parts['BYMONTHDAY'] = [date('j',$this->dtstart_ts)];
break;
case 'WEEKLY':
$parts['BYDAY'] = [array_search(date('N', $this->dtstart_ts), self::$week_days)];
break;
}
}
// BYSECOND
if ( not_empty($parts['BYSECOND']) ) {
if ( ! is_array($parts['BYSECOND']) ) {
$parts['BYSECOND'] = explode(',',$parts['BYSECOND']);
}
$this->bysecond = [];
foreach ( $parts['BYSECOND'] as $value ) {
if ( $value < 0 || $value > 60 ) {
throw new \InvalidArgumentException('Invalid BYSECOND value: '.$value);
}
$this->bysecond[] = (int) $value;
}
}
if ( not_empty($parts['BYMINUTE']) ) {
if ( ! is_array($parts['BYMINUTE']) ) {
$parts['BYMINUTE'] = explode(',',$parts['BYMINUTE']);
}
$this->byminute = [];
foreach ( $parts['BYMINUTE'] as $value ) {
if ( $value < 0 || $value > 59 ) {
throw new \InvalidArgumentException('Invalid BYMINUTE value: '.$value);
}
$this->byminute[] = (int) $value;
}
}
if ( not_empty($parts['BYHOUR']) ) {
if ( ! is_array($parts['BYHOUR']) ) {
$parts['BYHOUR'] = explode(',',$parts['BYHOUR']);
}
$this->byhour = [];
foreach ( $parts['BYHOUR'] as $value ) {
if ( $value < 0 || $value > 23 ) {
throw new \InvalidArgumentException('Invalid BYHOUR value: '.$value);
}
$this->byhour[] = (int) $value;
}
}
// BYDAY (translated to byweekday for convenience)
if ( not_empty($parts['BYDAY']) ) {
if ( ! is_array($parts['BYDAY']) ) {
$parts['BYDAY'] = explode(',',$parts['BYDAY']);
}
$this->byweekday = [];
$this->byweekday_relative = [];
foreach ( $parts['BYDAY'] as $value ) {
$valid = preg_match('/^([+-]?[0-9]+)?([A-Z]{2})$/', $value, $matches);
if ( ! $valid || (not_empty($matches[1]) && ($matches[1] == 0 || $matches[1] > 53 || $matches[1] < -53)) || ! array_key_exists($matches[2], self::$week_days) ) {
throw new \InvalidArgumentException('Invalid BYDAY value: '.$value);
}
if ( $matches[1] ) {
$this->byweekday_relative[] = [self::$week_days[$matches[2]], (int)$matches[1]];
}
else {
$this->byweekday[] = self::$week_days[$matches[2]];
}
}
if ( ! empty($this->weekday_relative) ) {
if ( $this->freq !== 'MONTHLY' && $this->freq !== 'YEARLY' ) {
throw new InvalidArgumentException('The BYDAY rule part MUST NOT be specified with a numeric value when the FREQ rule part is not set to MONTHLY or YEARLY.');
}
if ( $this->freq == 'YEARLY' && not_empty($parts['BYWEEKNO']) ) {
throw new InvalidArgumentException('The BYDAY rule part MUST NOT be specified with a numeric value with the FREQ rule part set to YEARLY when the BYWEEKNO rule part is specified.');
}
}
}
// The BYMONTHDAY rule part specifies a COMMA-separated list of days
// of the month. Valid values are 1 to 31 or -31 to -1. For
// example, -10 represents the tenth to the last day of the month.
// The BYMONTHDAY rule part MUST NOT be specified when the FREQ rule
// part is set to WEEKLY.
if ( not_empty($parts['BYMONTHDAY']) ) {
if ( $this->freq == 'WEEKLY' ) {
throw new \InvalidArgumentException('The BYMONTHDAY rule part MUST NOT be specified when the FREQ rule part is set to WEEKLY.');
}
if ( ! is_array($parts['BYMONTHDAY']) ) {
$parts['BYMONTHDAY'] = explode(',',$parts['BYMONTHDAY']);
}
$this->bymonthday = [];
$this->bymonthday_negative = [];
foreach ( $parts['BYMONTHDAY'] as $value ) {
if ( ! $value || $value < -31 || $value > 31 ) {
throw new \InvalidArgumentException('Invalid BYMONTHDAY value: '.$value.' (valid values are 1 to 31 or -31 to -1)');
}
if ( $value < 0 ) {
$this->bymonthday_negative[] = (int) $value;
}
else {
$this->bymonthday[] = (int) $value;
}
}
}
if ( not_empty($parts['BYYEARDAY']) ) {
if ( $this->freq == 'DAILY' || $this->freq == 'WEEKLY' || $this->freq == 'MONTHLY' ) {
throw new \InvalidArgumentException('The BYYEARDAY rule part MUST NOT be specified when the FREQ rule part is set to DAILY, WEEKLY, or MONTHLY.');
}
if ( ! is_array($parts['BYYEARDAY']) ) {
$parts['BYYEARDAY'] = explode(',',$parts['BYYEARDAY']);
}
$this->bysetpos = [];
foreach ( $parts['BYYEARDAY'] as $value ) {
if ( ! $value || $value < -366 || $value > 366 ) {
throw new \InvalidArgumentException('Invalid BYSETPOS value: '.$value.' (valid values are 1 to 366 or -366 to -1)');
}
$this->byyearday[] = (int) $value;
}
}
// BYWEEKNO
if ( not_empty($parts['BYWEEKNO']) ) {
if ( $this->freq !== 'YEARLY' ) {
throw new \InvalidArgumentException('The BYWEEKNO rule part MUST NOT be used when the FREQ rule part is set to anything other than YEARLY.');
}
if ( ! is_array($parts['BYWEEKNO']) ) {
$parts['BYWEEKNO'] = explode(',',$parts['BYWEEKNO']);
}
$this->byweekno = [];
foreach ( $parts['BYWEEKNO'] as $value ) {
if ( ! $value || $value < -53 || $value > 53 ) {
throw new \InvalidArgumentException('Invalid BYWEEKNO value: '.$value.' (valid values are 1 to 53 or -53 to -1)');
}
$this->byweekno[] = (int) $value;
}
}
// The BYMONTH rule part specifies a COMMA-separated list of months
// of the year. Valid values are 1 to 12.
if ( not_empty($parts['BYMONTH']) ) {
if ( ! is_array($parts['BYMONTH']) ) {
$parts['BYMONTH'] = explode(',',$parts['BYMONTH']);
}
$this->bymonth = [];
foreach ( $parts['BYMONTH'] as $value ) {
if ( $value < 1 || $value > 12 ) {
throw new \InvalidArgumentException('Invalid BYMONTH value: '.$value);
}
$this->bymonth[] = (int) $value;
}
}
if ( not_empty($parts['BYSETPOS']) ) {
if ( ! (not_empty($parts['BYWEEKNO']) || not_empty($parts['BYYEARDAY']) || not_empty($parts['BYMONTHDAY']) || not_empty($parts['BYDAY']) || not_empty($parts['BYMONTH'])) ) {
throw new \InvalidArgumentException('The BYSETPOST rule part MUST only be used in conjunction with another BYxxx rule part.');
}
if ( ! is_array($parts['BYSETPOS']) ) {
$parts['BYSETPOS'] = explode(',',$parts['BYSETPOS']);
}
$this->bysetpos = [];
foreach ( $parts['BYSETPOS'] as $value ) {
if ( ! $value || $value < -366 || $value > 366 ) {
throw new \InvalidArgumentException('Invalid BYSETPOS value: '.$value.' (valid values are 1 to 366 or -366 to -1)');
}
$this->bysetpos[] = (int) $value;
}
}
}
public function getOccurrences()
{
if ( ! $this->count && ! $this->until ) {
throw new \LogicException('Cannot get all occurences of an infinite recurrence rule.');
}
$res = [];
foreach ( $this as $occurence ) {
$res[] = $occurence;
}
return $res;
}
/**
* @return array
*/
public function getOccurrencesBetween($begin, $end)
{
$res = [];
foreach ( $this as $occurence ) {
if ( $occurence < $begin ) {
continue;
}
if ( $occurence > $end ) {
break;
}
$res[] = $occurence;
}
return $res;
}
/**
* @return bool
*/
public function occursOn($date)
{
}
// Iterator interface
protected $position = 0;
public function rewind()
{
$this->position = $this->iterate(true);
}
public function current()
{
return $this->position;
}
public function key()
{
// void
}
public function next()
{
$this->position = $this->iterate();
}
public function valid()
{
return $this->position !== null;
}
// ArrayAccess interface
public function offsetExists($offset)
{
}
public function offsetGet($offset)
{
}
public function offsetSet($offset, $value)
{
throw new LogicException('Setting a Date in a RRule is not supported');
}
public function offsetUnset($offset)
{
throw new LogicException('Unsetting a Date in a RRule is not supported');
}
// private methods
/**
* This method returns an array of days of the year (numbered from 0 to 365)
* of the current timeframe (year, month, week, day) containing the current date
*/
protected function getDaySet($year, $month, $day, array $masks)
{
switch ( $this->freq ) {
case 'YEARLY':
return range(0,$masks['year_len']-1);
case 'MONTHLY':
$start = $masks['month_to_last_day'][$month-1];
$stop = $masks['month_to_last_day'][$month];
return range($start, $stop - 1);
case 'WEEKLY':
// on first iteration, the first week will not be complete
// we don't backtrack to the first day of the week, to avoid
// crossing year boundary in reverse (i.e. if the week started
// during the previous year), because that would generate
// negative indexes (which would not work with the masks)
$set = [];
$i = (int) date('z', mktime(0,0,0,$month,$day,$year));
$start = $i;
for ( $j = 0; $j < 7; $j++ ) {
$set[] = $i;
$i += 1;
if ( $masks['doy_to_weekday'][$i] == $this->wkst ) {
break;
}
}
return $set;
case 'DAILY':
case 'HOURLY':
case 'MINUTELY':
case 'SECONDLY':
$n = (int) date('z', mktime(0,0,0,$month,$day,$year));
return [$n];
}
}
/**
* Some serious magic is happening here.
*/
protected function buildWeekdayMasks($year, $month, $day, array & $masks)
{
$masks['doy_to_weekday'] = array_slice(self::$WEEKDAY_MASK, date('N', mktime(0,0,0,1,1,$year))-1);
$masks['doy_to_weekday_relative'] = array();
if ( $this->byweekday_relative ) {
$ranges = array();
if ( $this->freq == 'YEARLY' ) {
if ( $this->bymonth ) {
foreach ( $this->bymonth as $bymonth ) {
$ranges[] = [$masks['month_to_last_day'][$bymonth-1], $masks['month_to_last_day'][$bymonth]];
}
}
else {
$ranges = [[0,$masks['year_len']-1]];
}
}
elseif ( $this->freq == 'MONTHLY') {
$ranges[] = [$masks['month_to_last_day'][$month-1], $masks['month_to_last_day'][$month]];
}
if ( $ranges ) {
foreach ( $ranges as $tmp ) {
list($first, $last) = $tmp;
foreach ( $this->byweekday_relative as $tmp ) {
list($weekday, $nth) = $tmp;
if ( $nth < 0 ) {
$i = $last + ($nth + 1) * 7;
$i = $i - pymod($masks['doy_to_weekday'][$i] - $weekday, 7);
}
else {
$i = $first + ($nth - 1) * 7;
$i = $i + (7 - $masks['doy_to_weekday'][$i] + $weekday) % 7;
}
if ( $i >= $first && $i <= $last ) {
$masks['doy_to_weekday_relative'][$i] = 1;
}
}
}
}
}
}
/**
* This is the main method, where all of the logic happens.
*
* This method is a generator that works for PHP 5.3/5.4 (using static variables)
*/
protected function iterate($reset = false)
{
// these are the static variables, i.e. the variables that persists
// at every call of the method (to emulate a generator)
static $year = null, $month = null, $day = null;
static $current_set = null;
static $total = 0;
if ( $reset ) {
$year = $month = $day = null;
$current_set = null;
$total = 0;
}
// stop once $total has reached COUNT
if ( $this->count && $total >= $this->count ) {
// echo "\tTotal = $total ; COUNT = ".$this->count." stopping iteration\n";
return null;
}
if ( $year == null ) {
// difference from python here
if ( $this->freq == 'WEEKLY' ) {
// we align the start date to the WKST, so we can then
// simply loop by adding +7 days
$tmp = strtotime($this->dtstart);
$tmp = strtotime('-'.pymod(date('N', $tmp) - $this->wkst,7).'days', $tmp);
list($year,$month,$day) = explode('-',date('Y-m-d',$tmp));
}
else {
list($year,$month,$day) = explode('-',$this->dtstart);
}
}
while (true) {
// 1. get an array of all days in the next interval (day, month, week, etc.)
// we filter out from this array all days that do not match the BYXXX conditions
// to speed things up, we use days of the year (day numbers) instead of date
if ( $current_set === null ) {
// rebuild the various masks and converters
// these arrays will allow fast date operations
// without relying on date() methods
$masks = [];
$masks['leap_year'] = is_leap_year($year);
$masks['year_len'] = 365 + (int) $masks['leap_year'];
$masks['next_year_len'] = 365 + is_leap_year($year + 1);
if ( $masks['leap_year'] ) {
$masks['doy_to_month'] = self::$MONTH_MASK_366;
$masks['doy_to_monthday'] = self::$MONTHDAY_MASK_366;
$masks['doy_to_monthday_negative'] = self::$NEGATIVE_MONTHDAY_MASK_366;
$masks['month_to_last_day'] = self::$LAST_DAY_OF_MONTH_366;
}
else {
$masks['doy_to_month'] = self::$MONTH_MASK;
$masks['doy_to_monthday'] = self::$MONTHDAY_MASK;
$masks['doy_to_monthday_negative'] = self::$NEGATIVE_MONTHDAY_MASK;
$masks['month_to_last_day'] = self::$LAST_DAY_OF_MONTH;
}
$this->buildWeekdayMasks($year, $month, $day, $masks);
$current_set = $this->getDaySet($year, $month, $day, $masks);
// echo"\tWorking with set=".json_encode($current_set)."\n";
// echo "\tdoy_to_weekday = ".json_encode($masks['doy_to_weekday'])."\n";
// echo "\tdoy_to_weekday_relative = ".json_encode($masks['doy_to_weekday_relative'])."\n";
// fgets(STDIN);
$filtered_set = array();
// If multiple BYxxx rule parts are specified, then after evaluating the
// specified FREQ and INTERVAL rule parts, the BYxxx rule parts are
// applied to the current set of evaluated occurrences in the following
// order: BYMONTH, BYWEEKNO, BYYEARDAY, BYMONTHDAY, BYDAY, BYHOUR,
// BYMINUTE, BYSECOND and BYSETPOS; then COUNT and UNTIL are evaluated.
// filter out (if needed)
foreach ( $current_set as $day_of_year ) {
// echo "\t DAY OF YEAR ",$day_of_year,"\n";
// echo "\t month=",$masks['doy_to_month'][$day_of_year],"\n";
// echo "\t monthday=",$doy_to_monthday[$day_of_year],"\n";
// echo "\t -monthday=",$doy_to_monthday_negative[$day_of_year],"\n";
// echo "\t weekday=",$doy_to_weekday[$day_of_year],"\n";
// fgets(STDIN);
if ( $this->bymonth && ! in_array($masks['doy_to_month'][$day_of_year], $this->bymonth) ) {
continue;
}
if ( ($this->bymonthday || $this->bymonthday_negative)
&& ! in_array($masks['doy_to_monthday'][$day_of_year], $this->bymonthday)
&& ! in_array($masks['doy_to_monthday_negative'][$day_of_year], $this->bymonthday_negative) ) {
continue;
}
if ( $this->byweekday && ! in_array($masks['doy_to_weekday'][$day_of_year], $this->byweekday) ) {
continue;
}
if ( $this->byweekday_relative && ! isset($masks['doy_to_weekday_relative'][$day_of_year]) ) {
continue;
}
if ( $this->byyearday ) {
if ( $day_of_year < $masks['year_len'] ) {
if ( ! in_array($day_of_year + 1, $this->byyearday) && ! in_array(- $masks['year_len'] + $day_of_year,$this->byyearday) ) {
continue;
}
}
else { // if ( ($day_of_year >= $masks['year_len']
if ( ! in_array($day_of_year + 1 - $masks['year_len'], $this->byyearday) && ! in_array(- $masks['next_year_len'] + $day_of_year - $mask['year_len'], $this->byyearday) ) {
continue;
}
}
}
$filtered_set[] = $day_of_year;
}
// echo "\tFiltered set (before BYSETPOS)=".json_encode($filtered_set)."\n";
$current_set = $filtered_set;
// Note: if one day we decide to support time this will have to be
// moved/rewritten to expand time *before* applying BYSETPOS
if ( $this->bysetpos ) {
$filtered_set = [];
$n = sizeof($current_set);
foreach ( $this->bysetpos as $pos ) {
if ( $pos < 0 ) {
$pos = $n + $pos;
}
else {
$pos = $pos - 1;
}
if ( isset($current_set[$pos]) ) {
$filtered_set[] = $current_set[$pos];
}
}
$current_set = array_unique($filtered_set);
}
// echo "\tFiltered set (after BYSETPOS)=".json_encode($filtered_set)."\n";
}
// 2. loop, generate a valid date, and return the result (fake "yield")
// at the same time, we check the end condition and return null if
// we need to stop
while ( ($day_of_year = current($current_set)) !== false ) {
$occurrence = date('Y-m-d', mktime(0, 0, 0, 1, ($day_of_year + 1), $year));
// consider end conditions
if ( $this->until && $occurrence > $this->until ) {
// $this->length = $total (?)
return null;
}
next($current_set);
if ( $occurrence >= $this->dtstart ) { // ignore occurences before DTSTART
$total += 1;
return $occurrence; // yield
}
}
// 3. we reset the loop to the next interval
$current_set = null; // reset the loop
switch ( $this->freq ) {
case 'YEARLY':
// we do not care about $month or $day not existing, they are not used in yearly frequency
$year = $year + $this->interval;
break;
case 'MONTHLY':
// we do not care about the day of the month not existing, it is not used in monthly frequency
$month = $month + $this->interval;
if ( $month > 12 ) {
$delta = (int) ($month / 12);
$mod = $month % 12;
$month = $mod;
$year = $year + $delta;
if ( $month == 0 ) {
$month = 12;
$year = $year - 1;
}
}
break;
case 'WEEKLY':
// here we take a little shortcut from the Python version, by using date/time methods
list($year,$month,$day) = explode('-',date('Y-m-d',strtotime('+'.($this->interval*7).'day', mktime(0,0,0,$month,$day,$year))));
break;
case 'DAILY':
// here we take a little shortcut from the Python version, by using date/time methods
list($year,$month,$day) = explode('-',date('Y-m-d',strtotime('+'.$this->interval.'day', mktime(0,0,0,$month,$day,$year))));
break;
case 'HOURLY':
case 'MINUTELY':
case 'SECONDLY':
throw new LogicException('Unimplemented');
}
// prevent overflow (especially on 32 bits system)
if ( $year >= MAX_YEAR ) {
return null;
}
}
}
// constants
// Every mask is 7 days longer to handle cross-year weekly periods.
public static $MONTH_MASK = array(
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,
12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,
1,1,1,1,1,1,1
);
public static $MONTH_MASK_366 = array(
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,
12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,
1,1,1,1,1,1,1
);
public static $MONTHDAY_MASK = array(
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7
);
public static $MONTHDAY_MASK_366 = array(
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,
1,2,3,4,5,6,7
);
public static $NEGATIVE_MONTHDAY_MASK = array(
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25
);
public static $NEGATIVE_MONTHDAY_MASK_366 = array(
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25,-24,-23,-22,-21,-20,-19,-18,-17,-16,-15,-14,-13,-12,-11,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,
-31,-30,-29,-28,-27,-26,-25
);
public static $WEEKDAY_MASK = array(
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,
1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7,1,2,3,4,5,6,7
);
public static $LAST_DAY_OF_MONTH_366 = array(
0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366
);
public static $LAST_DAY_OF_MONTH = array(
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365
);
}
Reference in New Issue Copy Permalink