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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: Lorenzo Alberton <l dot alberton at quipo dot it> | |
| // +----------------------------------------------------------------------+ |
| // |
| // $Id: PearDate.php,v 1.8 2004/08/20 20:00:55 quipo Exp $ |
| // |
| /** |
| * @package Calendar |
| * @version $Id: PearDate.php,v 1.8 2004/08/20 20:00:55 quipo Exp $ |
| */ |
| /** |
| * Load PEAR::Date class |
| */ |
| require_once 'Date.php'; |
| |
| /** |
| * Performs calendar calculations based on the PEAR::Date class |
| * Timestamps are in the ISO-8601 format (YYYY-MM-DD HH:MM:SS) |
| * @package Calendar |
| * @access protected |
| */ |
| class Calendar_Engine_PearDate /* implements Calendar_Engine_Interface */ |
| { |
| /** |
| * Makes sure a given timestamp is only ever parsed once |
| * Uses a static variable to prevent date() being used twice |
| * for a date which is already known |
| * @param mixed Any timestamp format recognized by Pear::Date |
| * @return object Pear::Date object |
| * @access protected |
| */ |
| function stampCollection($stamp) |
| { |
| static $stamps = array(); |
| if (!isset($stamps[$stamp])) { |
| $stamps[$stamp] = new Date($stamp); |
| } |
| return $stamps[$stamp]; |
| } |
| |
| /** |
| * Returns a numeric year given a iso-8601 datetime |
| * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
| * @return int year (e.g. 2003) |
| * @access protected |
| */ |
| function stampToYear($stamp) |
| { |
| $date = Calendar_Engine_PearDate::stampCollection($stamp); |
| return (int)$date->year; |
| } |
| |
| /** |
| * Returns a numeric month given a iso-8601 datetime |
| * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
| * @return int month (e.g. 9) |
| * @access protected |
| */ |
| function stampToMonth($stamp) |
| { |
| $date = Calendar_Engine_PearDate::stampCollection($stamp); |
| return (int)$date->month; |
| } |
| |
| /** |
| * Returns a numeric day given a iso-8601 datetime |
| * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
| * @return int day (e.g. 15) |
| * @access protected |
| */ |
| function stampToDay($stamp) |
| { |
| $date = Calendar_Engine_PearDate::stampCollection($stamp); |
| return (int)$date->day; |
| } |
| |
| /** |
| * Returns a numeric hour given a iso-8601 datetime |
| * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
| * @return int hour (e.g. 13) |
| * @access protected |
| */ |
| function stampToHour($stamp) |
| { |
| $date = Calendar_Engine_PearDate::stampCollection($stamp); |
| return (int)$date->hour; |
| } |
| |
| /** |
| * Returns a numeric minute given a iso-8601 datetime |
| * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
| * @return int minute (e.g. 34) |
| * @access protected |
| */ |
| function stampToMinute($stamp) |
| { |
| $date = Calendar_Engine_PearDate::stampCollection($stamp); |
| return (int)$date->minute; |
| } |
| |
| /** |
| * Returns a numeric second given a iso-8601 datetime |
| * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
| * @return int second (e.g. 51) |
| * @access protected |
| */ |
| function stampToSecond($stamp) |
| { |
| $date = Calendar_Engine_PearDate::stampCollection($stamp); |
| return (int)$date->second; |
| } |
| |
| /** |
| * Returns a iso-8601 datetime |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (13) |
| * @param int hour (13) |
| * @param int minute (34) |
| * @param int second (53) |
| * @return string iso-8601 datetime |
| * @access protected |
| */ |
| function dateToStamp($y, $m, $d, $h=0, $i=0, $s=0) |
| { |
| $r = array(); |
| Calendar_Engine_PearDate::adjustDate($y, $m, $d, $h, $i, $s); |
| $key = $y.$m.$d.$h.$i.$s; |
| if (!isset($r[$key])) { |
| $r[$key] = sprintf("%04d-%02d-%02d %02d:%02d:%02d", |
| $y, $m, $d, $h, $i, $s); |
| } |
| return $r[$key]; |
| } |
| |
| /** |
| * Set the correct date values (useful for math operations on dates) |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (13) |
| * @param int hour (13) |
| * @param int minute (34) |
| * @param int second (53) |
| * @access protected |
| */ |
| function adjustDate(&$y, &$m, &$d, &$h, &$i, &$s) |
| { |
| if ($s < 0) { |
| $m -= floor($s / 60); |
| $s = -$s % 60; |
| } |
| if ($s > 60) { |
| $m += floor($s / 60); |
| $s %= 60; |
| } |
| if ($i < 0) { |
| $h -= floor($i / 60); |
| $i = -$i % 60; |
| } |
| if ($i > 60) { |
| $h += floor($i / 60); |
| $i %= 60; |
| } |
| if ($h < 0) { |
| $d -= floor($h / 24); |
| $h = -$h % 24; |
| } |
| if ($h > 24) { |
| $d += floor($h / 24); |
| $h %= 24; |
| } |
| for(; $m < 1; $y--, $m+=12); |
| for(; $m > 12; $y++, $m-=12); |
| |
| while ($d < 1) { |
| if ($m > 1) { |
| $m--; |
| } else { |
| $m = 12; |
| $y--; |
| } |
| $d += Date_Calc::daysInMonth($m, $y); |
| } |
| for ($max_days = Date_Calc::daysInMonth($m, $y); $d > $max_days; ) { |
| $d -= $max_days; |
| if ($m < 12) { |
| $m++; |
| } else { |
| $m = 1; |
| $y++; |
| } |
| } |
| } |
| |
| /** |
| * The upper limit on years that the Calendar Engine can work with |
| * @return int 9999 |
| * @access protected |
| */ |
| function getMaxYears() |
| { |
| return 9999; |
| } |
| |
| /** |
| * The lower limit on years that the Calendar Engine can work with |
| * @return int 0 |
| * @access protected |
| */ |
| function getMinYears() |
| { |
| return 0; |
| } |
| |
| /** |
| * Returns the number of months in a year |
| * @return int (12) |
| * @access protected |
| */ |
| function getMonthsInYear($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, $m) |
| { |
| return (int)Date_Calc::daysInMonth($m, $y); |
| } |
| |
| /** |
| * Returns numeric representation of the day of the week in a month, |
| * given year and month |
| * @param int year (2003) |
| * @param int month (9) |
| * @return int from 0 to 7 |
| * @access protected |
| */ |
| function getFirstDayInMonth($y, $m) |
| { |
| return (int)Date_Calc::dayOfWeek(1, $m, $y); |
| } |
| |
| /** |
| * Returns the number of days in a week |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @return int (7) |
| * @access protected |
| */ |
| function getDaysInWeek($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, $d) |
| { |
| return Date_Calc::weekOfYear($d, $m, $y); //beware, Date_Calc doesn't follow ISO-8601 standard! |
| } |
| |
| /** |
| * Returns the number of the week in the month, given a date |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @param int first day of the week (default: monday) |
| * @return int week number |
| * @access protected |
| */ |
| function getWeekNInMonth($y, $m, $d, $firstDay=1) |
| { |
| $weekEnd = ($firstDay == 0) ? $this->getDaysInWeek()-1 : $firstDay-1; |
| $end_of_week = (int)Date_Calc::nextDayOfWeek($weekEnd, 1, $m, $y, '%e', true); |
| $w = 1; |
| while ($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) |
| { |
| $FDOM = Date_Calc::firstOfMonthWeekday($m, $y); |
| if ($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, $d) |
| { |
| return Date_Calc::dayOfWeek($d, $m, $y); |
| } |
| |
| /** |
| * Returns a list of integer days of the week beginning 0 |
| * @param int year (2003) |
| * @param int month (9) |
| * @param int day (4) |
| * @return array (0, 1, 2, 3, 4, 5, 6) 1 = Monday |
| * @access protected |
| */ |
| function getWeekDays($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; |
| } |
| } |
| ?> |