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| <?php |
| /* vim: set expandtab tabstop=4 shiftwidth=4: */ |
| // |
| // +----------------------------------------------------------------------+ |
| // | PHP Version 4 | |
| // +----------------------------------------------------------------------+ |
| // | Copyright (c) 1997-2002 The PHP Group | |
| // +----------------------------------------------------------------------+ |
| // | This source file is subject to version 2.02 of the PHP license, | |
| // | that is bundled with this package in the file LICENSE, and is | |
| // | available at through the world-wide-web at | |
| // | http://www.php.net/license/3_0.txt. | |
| // | If you did not receive a copy of the PHP license and are unable to | |
| // | obtain it through the world-wide-web, please send a note to | |
| // | license@php.net so we can mail you a copy immediately. | |
| // +----------------------------------------------------------------------+ |
| // | Authors: Harry Fuecks <hfuecks@phppatterns.com> | |
| // +----------------------------------------------------------------------+ |
| // |
| // $Id: UnixTS.php,v 1.9 2004/08/20 20:00:55 quipo Exp $ |
| // |
| /** |
| * @package Calendar |
| * @version $Id: UnixTS.php,v 1.9 2004/08/20 20:00:55 quipo Exp $ |
| */ |
| /** |
| * Performs calendar calculations based on the PHP date() function and |
| * Unix timestamps (using PHP's mktime() function). |
| * @package Calendar |
| * @access protected |
| */ |
| class Calendar_Engine_UnixTS /* implements Calendar_Engine_Interface */ |
| { |
| /** |
| * Makes sure a given timestamp is only ever parsed once |
| * <pre> |
| * array ( |
| * [0] => year (e.g 2003), |
| * [1] => month (e.g 9), |
| * [2] => day (e.g 6), |
| * [3] => hour (e.g 14), |
| * [4] => minute (e.g 34), |
| * [5] => second (e.g 45), |
| * [6] => num days in month (e.g. 31), |
| * [7] => week in year (e.g. 50), |
| * [8] => day in week (e.g. 0 for Sunday) |
| * ) |
| * </pre> |
| * Uses a static variable to prevent date() being used twice |
| * for a date which is already known |
| * @param int Unix timestamp |
| * @return array |
| * @access protected |
| */ |
| function stampCollection($stamp) |
| { |
| static $stamps = array(); |
| if ( !isset($stamps[$stamp]) ) { |
| $date = @date('Y n j H i s t W w',$stamp); |
| $stamps[$stamp] = sscanf($date, "%d %d %d %d %d %d %d %d %d"); |
| } |
| return $stamps[$stamp]; |
| } |
| |
| /** |
| * Returns a numeric year given a timestamp |
| * @param int Unix timestamp |
| * @return int year (e.g. 2003) |
| * @access protected |
| */ |
| function stampToYear($stamp) |
| { |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return (int)$date[0]; |
| } |
| |
| /** |
| * Returns a numeric month given a timestamp |
| * @param int Unix timestamp |
| * @return int month (e.g. 9) |
| * @access protected |
| */ |
| function stampToMonth($stamp) |
| { |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return (int)$date[1]; |
| } |
| |
| /** |
| * Returns a numeric day given a timestamp |
| * @param int Unix timestamp |
| * @return int day (e.g. 15) |
| * @access protected |
| */ |
| function stampToDay($stamp) |
| { |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return (int)$date[2]; |
| } |
| |
| /** |
| * Returns a numeric hour given a timestamp |
| * @param int Unix timestamp |
| * @return int hour (e.g. 13) |
| * @access protected |
| */ |
| function stampToHour($stamp) |
| { |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return (int)$date[3]; |
| } |
| |
| /** |
| * Returns a numeric minute given a timestamp |
| * @param int Unix timestamp |
| * @return int minute (e.g. 34) |
| * @access protected |
| */ |
| function stampToMinute($stamp) |
| { |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return (int)$date[4]; |
| } |
| |
| /** |
| * Returns a numeric second given a timestamp |
| * @param int Unix timestamp |
| * @return int second (e.g. 51) |
| * @access protected |
| */ |
| function stampToSecond($stamp) |
| { |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return (int)$date[5]; |
| } |
| |
| /** |
| * Returns a timestamp |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (13) |
| * @param int hour (13) |
| * @param int minute (34) |
| * @param int second (53) |
| * @return int Unix timestamp |
| * @access protected |
| */ |
| function dateToStamp($y, $m, $d, $h=0, $i=0, $s=0) |
| { |
| static $dates = array(); |
| if ( !isset($dates[$y][$m][$d][$h][$i][$s]) ) { |
| $dates[$y][$m][$d][$h][$i][$s] = @mktime($h, $i, $s, $m, $d, $y); |
| } |
| return $dates[$y][$m][$d][$h][$i][$s]; |
| } |
| |
| /** |
| * The upper limit on years that the Calendar Engine can work with |
| * @return int (2037) |
| * @access protected |
| */ |
| function getMaxYears() |
| { |
| return 2037; |
| } |
| |
| /** |
| * The lower limit on years that the Calendar Engine can work with |
| * @return int (1970 if it's Windows and 1902 for all other OSs) |
| * @access protected |
| */ |
| function getMinYears() |
| { |
| return $min = strpos(PHP_OS, 'WIN') === false ? 1902 : 1970; |
| } |
| |
| /** |
| * Returns the number of months in a year |
| * @return int (12) |
| * @access protected |
| */ |
| function getMonthsInYear($y=null) |
| { |
| return 12; |
| } |
| |
| /** |
| * Returns the number of days in a month, given year and month |
| * @param int year (2003) |
| * @param int month (9) |
| * @return int days in month |
| * @access protected |
| */ |
| function getDaysInMonth($y, $m) |
| { |
| $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,1); |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return $date[6]; |
| } |
| |
| /** |
| * Returns numeric representation of the day of the week in a month, |
| * given year and month |
| * @param int year (2003) |
| * @param int month (9) |
| * @return int from 0 to 6 |
| * @access protected |
| */ |
| function getFirstDayInMonth($y, $m) |
| { |
| $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,1); |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return $date[8]; |
| } |
| |
| /** |
| * Returns the number of days in a week |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @return int (7) |
| * @access protected |
| */ |
| function getDaysInWeek($y=NULL, $m=NULL, $d=NULL) |
| { |
| return 7; |
| } |
| |
| /** |
| * Returns the number of the week in the year (ISO-8601), given a date |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @return int week number |
| * @access protected |
| */ |
| function getWeekNInYear($y, $m, $d) |
| { |
| $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,$d); |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return $date[7]; |
| } |
| |
| /** |
| * Returns the number of the week in the month, given a date |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @param int first day of the week (default: monday) |
| * @return int week number |
| * @access protected |
| */ |
| function getWeekNInMonth($y, $m, $d, $firstDay=1) |
| { |
| $weekEnd = ($firstDay == 0) ? $this->getDaysInWeek()-1 : $firstDay-1; |
| $end_of_week = 1; |
| while (@date('w', @mktime(0, 0, 0, $m, $end_of_week, $y)) != $weekEnd) { |
| ++$end_of_week; //find first weekend of the month |
| } |
| $w = 1; |
| while ($d > $end_of_week) { |
| ++$w; |
| $end_of_week += $this->getDaysInWeek(); |
| } |
| return $w; |
| } |
| |
| /** |
| * Returns the number of weeks in the month |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int first day of the week (default: monday) |
| * @return int weeks number |
| * @access protected |
| */ |
| function getWeeksInMonth($y, $m, $firstDay=1) |
| { |
| $FDOM = $this->getFirstDayInMonth($y, $m); |
| if ($FDOM == 0) { |
| $FDOM = $this->getDaysInWeek(); |
| } |
| if ($FDOM > $firstDay) { |
| $daysInTheFirstWeek = $this->getDaysInWeek() - $FDOM + $firstDay; |
| $weeks = 1; |
| } else { |
| $daysInTheFirstWeek = $firstDay - $FDOM; |
| $weeks = 0; |
| } |
| $daysInTheFirstWeek %= $this->getDaysInWeek(); |
| return (int)(ceil(($this->getDaysInMonth($y, $m) - $daysInTheFirstWeek) / |
| $this->getDaysInWeek()) + $weeks); |
| } |
| |
| /** |
| * Returns the number of the day of the week (0=sunday, 1=monday...) |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @return int weekday number |
| * @access protected |
| */ |
| function getDayOfWeek($y, $m, $d) |
| { |
| $stamp = Calendar_Engine_UnixTS::dateToStamp($y,$m,$d); |
| $date = Calendar_Engine_UnixTS::stampCollection($stamp); |
| return $date[8]; |
| } |
| |
| /** |
| * Returns a list of integer days of the week beginning 0 |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @return array (0,1,2,3,4,5,6) 1 = Monday |
| * @access protected |
| */ |
| function getWeekDays($y=NULL, $m=NULL, $d=NULL) |
| { |
| return array(0, 1, 2, 3, 4, 5, 6); |
| } |
| |
| /** |
| * Returns the default first day of the week |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @return int (default 1 = Monday) |
| * @access protected |
| */ |
| function getFirstDayOfWeek($y=NULL, $m=NULL, $d=NULL) |
| { |
| return 1; |
| } |
| |
| /** |
| * Returns the number of hours in a day |
| * @return int (24) |
| * @access protected |
| */ |
| function getHoursInDay($y=null,$m=null,$d=null) |
| { |
| return 24; |
| } |
| |
| /** |
| * Returns the number of minutes in an hour |
| * @return int (60) |
| * @access protected |
| */ |
| function getMinutesInHour($y=null,$m=null,$d=null,$h=null) |
| { |
| return 60; |
| } |
| |
| /** |
| * Returns the number of seconds in a minutes |
| * @return int (60) |
| * @access protected |
| */ |
| function getSecondsInMinute($y=null,$m=null,$d=null,$h=null,$i=null) |
| { |
| return 60; |
| } |
| } |
| ?> |