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<?php |
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|
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// The constant telling us what day starts the week. Monday (1) is the |
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// international standard. Redefine this to 0 if you want weeks to |
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// begin on Sunday. |
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define('DATE_CALC_BEGIN_WEEKDAY', 1); |
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|
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/** |
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* Date_Calc is a calendar class used to calculate and |
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* manipulate calendar dates and retrieve dates in a calendar |
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* format. It does not rely on 32-bit system date stamps, so |
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* you can display calendars and compare dates that date |
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* pre 1970 and post 2038. |
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* |
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* This source file is subject to version 2.02 of the PHP license, |
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* that is bundled with this package in the file LICENSE, and is |
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* available at through the world-wide-web at |
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* http://www.php.net/license/2_02.txt. |
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* If you did not receive a copy of the PHP license and are unable to |
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* obtain it through the world-wide-web, please send a note to |
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* license@php.net so we can mail you a copy immediately. |
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* |
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* Copyright (c) 1999, 2000 ispi |
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* |
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* @access public |
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* |
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* @version 1.2.4 |
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* @author Monte Ohrt <monte@ispi.net> |
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*/ |
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|
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class Date_Calc { |
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|
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/** |
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* Returns the current local date. NOTE: This function |
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* retrieves the local date using strftime(), which may |
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* or may not be 32-bit safe on your system. |
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* |
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* @param string the strftime() format to return the date |
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* |
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* @access public |
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* |
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* @return string the current date in specified format |
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*/ |
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|
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function dateNow($format="%Y%m%d") |
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{ |
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return(strftime($format,time())); |
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|
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} // end func dateNow |
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|
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/** |
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* Returns true for valid date, false for invalid date. |
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* |
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* @param string year in format CCYY |
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* @param string month in format MM |
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* @param string day in format DD |
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* |
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* @access public |
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* |
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* @return boolean true/false |
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*/ |
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|
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function isValidDate($day, $month, $year) |
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{ |
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|
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if(empty($year) || empty($month) || empty($day)) |
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return false; |
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|
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// must be digits only |
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if(preg_match("/\D/",$year)) |
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return false; |
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if(preg_match("/\D/",$month)) |
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return false; |
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if(preg_match("/\D/",$day)) |
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return false; |
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|
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if($year < 0 || $year > 9999) |
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return false; |
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if($month < 1 || $month > 12) |
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return false; |
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if($day < 1 || $day > 31 || $day > Date_Calc::daysInMonth($month,$year)) |
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return false; |
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|
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return true; |
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|
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} // end func isValidDate |
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|
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function isLeapYear($year="") |
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{ |
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|
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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|
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if(strlen($year) != 4) |
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return false; |
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|
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if(preg_match("/\D/",$year)) |
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return false; |
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|
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return (($year % 4 == 0 && $year % 100 != 0) || $year % 400 == 0); |
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|
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} // end func isLeapYear |
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|
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/** |
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* Determines if given date is a future date from now. |
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* |
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* @param string year in format CCYY |
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* @param string month in format MM |
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* @param string day in format DD |
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* |
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* @access public |
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* |
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* @return boolean true/false |
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*/ |
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|
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function isFutureDate($day,$month,$year) |
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{ |
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$this_year = Date_Calc::dateNow("%Y"); |
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$this_month = Date_Calc::dateNow("%m"); |
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$this_day = Date_Calc::dateNow("%d"); |
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|
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|
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if($year > $this_year) |
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return true; |
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elseif($year == $this_year) |
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if($month > $this_month) |
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return true; |
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elseif($month == $this_month) |
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if($day > $this_day) |
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return true; |
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|
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return false; |
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|
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} // end func isFutureDate |
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|
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/** |
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* Determines if given date is a past date from now. |
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* |
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* @param string year in format CCYY |
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* @param string month in format MM |
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* @param string day in format DD |
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* |
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* @access public |
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* |
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* @return boolean true/false |
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*/ |
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|
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function isPastDate($day,$month,$year) |
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{ |
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$this_year = Date_Calc::dateNow("%Y"); |
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$this_month = Date_Calc::dateNow("%m"); |
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$this_day = Date_Calc::dateNow("%d"); |
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|
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|
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if($year < $this_year) |
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return true; |
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elseif($year == $this_year) |
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if($month < $this_month) |
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return true; |
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elseif($month == $this_month) |
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if($day < $this_day) |
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return true; |
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|
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return false; |
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|
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} // end func isPastDate |
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|
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/** |
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* Returns day of week for given date, 0=Sunday |
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* |
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* @param string year in format CCYY, default is current local year |
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* @param string month in format MM, default is current local month |
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* @param string day in format DD, default is current local day |
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* |
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* @access public |
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* |
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* @return int $weekday_number |
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*/ |
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|
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function dayOfWeek($day="",$month="",$year="") |
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{ |
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|
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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if(empty($month)) |
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$month = Date_Calc::dateNow("%m"); |
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if(empty($day)) |
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$day = Date_Calc::dateNow("%d"); |
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|
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if($month > 2) |
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$month -= 2; |
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else |
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{ |
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$month += 10; |
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$year--; |
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} |
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|
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$day = ( floor((13 * $month - 1) / 5) + |
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$day + ($year % 100) + |
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floor(($year % 100) / 4) + |
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floor(($year / 100) / 4) - 2 * |
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floor($year / 100) + 77); |
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|
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$weekday_number = (($day - 7 * floor($day / 7))); |
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|
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return $weekday_number; |
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|
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} // end func dayOfWeek |
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|
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/** |
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* Returns week of the year, first Sunday is first day of first week |
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* |
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* @param string day in format DD |
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* @param string month in format MM |
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* @param string year in format CCYY |
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* |
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* @access public |
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* |
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* @return integer $week_number |
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*/ |
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|
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function weekOfYear($day,$month,$year) |
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{ |
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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if(empty($month)) |
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$month = Date_Calc::dateNow("%m"); |
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if(empty($day)) |
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$day = Date_Calc::dateNow("%d"); |
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|
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$week_year = $year - 1501; |
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$week_day = $week_year * 365 + floor($week_year / 4) - 29872 + 1 |
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- floor($week_year / 100) + floor(($week_year - 300) / 400); |
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|
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$week_number = |
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ceil((Date_Calc::julianDate($day,$month,$year) + floor(($week_day + 4) % 7)) / 7); |
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|
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return $week_number; |
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|
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} // end func weekOfYear |
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|
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/** |
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* Returns number of days since 31 December of year before given date. |
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* |
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* @param string year in format CCYY, default is current local year |
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* @param string month in format MM, default is current local month |
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* @param string day in format DD, default is current local day |
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* |
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* @access public |
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* |
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* @return int $julian |
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*/ |
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|
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function julianDate($day="",$month="",$year="") |
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{ |
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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if(empty($month)) |
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$month = Date_Calc::dateNow("%m"); |
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if(empty($day)) |
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$day = Date_Calc::dateNow("%d"); |
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|
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$days = array(0,31,59,90,120,151,181,212,243,273,304,334); |
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|
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$julian = ($days[$month - 1] + $day); |
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|
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if($month > 2 && Date_Calc::isLeapYear($year)) |
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$julian++; |
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|
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return($julian); |
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|
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} // end func julianDate |
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|
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/** |
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* Returns quarter of the year for given date |
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* |
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* @param string year in format CCYY, default current local year |
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* @param string month in format MM, default current local month |
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* @param string day in format DD, default current local day |
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* |
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* @access public |
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* |
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* @return int $year_quarter |
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*/ |
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|
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function quarterOfYear($day="",$month="",$year="") |
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{ |
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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if(empty($month)) |
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$month = Date_Calc::dateNow("%m"); |
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if(empty($day)) |
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$day = Date_Calc::dateNow("%d"); |
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|
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$year_quarter = (intval(($month - 1) / 3 + 1)); |
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|
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return $year_quarter; |
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|
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} // end func quarterOfYear |
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|
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/** |
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* Returns date of begin of next month of given date. |
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* |
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* @param string year in format CCYY, default current local year |
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* @param string month in format MM, default current local month |
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* @param string day in format DD, default current local day |
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* @param string format for returned date |
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* |
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* @access public |
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* |
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* @return string date in given format |
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*/ |
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|
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function beginOfNextMonth($day="",$month="",$year="",$format="%Y%m%d") |
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{ |
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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if(empty($month)) |
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$month = Date_Calc::dateNow("%m"); |
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if(empty($day)) |
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$day = Date_Calc::dateNow("%d"); |
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|
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if($month < 12) |
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{ |
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$month++; |
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$day=1; |
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} |
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else |
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{ |
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$year++; |
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$month=1; |
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$day=1; |
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} |
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|
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return Date_Calc::dateFormat($day,$month,$year,$format); |
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|
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} // end func beginOfNextMonth |
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|
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/** |
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* Returns date of the last day of next month of given date. |
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* |
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* @param string year in format CCYY, default current local year |
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* @param string month in format MM, default current local month |
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* @param string day in format DD, default current local day |
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* @param string format for returned date |
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* |
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* @access public |
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* |
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* @return string date in given format |
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*/ |
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|
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function endOfNextMonth($day="",$month="",$year="",$format="%Y%m%d") |
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{ |
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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if(empty($month)) |
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$month = Date_Calc::dateNow("%m"); |
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if(empty($day)) |
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$day = Date_Calc::dateNow("%d"); |
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|
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|
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if($month < 12) |
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{ |
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$month++; |
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} |
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else |
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{ |
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$year++; |
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$month=1; |
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} |
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|
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$day = Date_Calc::daysInMonth($month,$year); |
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|
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return Date_Calc::dateFormat($day,$month,$year,$format); |
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|
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} // end func endOfNextMonth |
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|
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/** |
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* Returns date of the first day of previous month of given date. |
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* |
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* @param string year in format CCYY, default current local year |
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* @param string month in format MM, default current local month |
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* @param string day in format DD, default current local day |
| 384 |
* @param string format for returned date |
| 385 |
* |
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* @access public |
| 387 |
* |
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* @return string date in given format |
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*/ |
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|
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function beginOfPrevMonth($day="",$month="",$year="",$format="%Y%m%d") |
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{ |
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
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if(empty($month)) |
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$month = Date_Calc::dateNow("%m"); |
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if(empty($day)) |
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$day = Date_Calc::dateNow("%d"); |
| 399 |
|
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if($month > 1) |
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{ |
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$month--; |
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$day=1; |
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} |
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else |
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{ |
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$year--; |
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$month=12; |
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$day=1; |
| 410 |
} |
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|
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return Date_Calc::dateFormat($day,$month,$year,$format); |
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|
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} // end func beginOfPrevMonth |
| 415 |
|
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/** |
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* Returns date of the last day of previous month for given date. |
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* |
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* @param string year in format CCYY, default current local year |
| 420 |
* @param string month in format MM, default current local month |
| 421 |
* @param string day in format DD, default current local day |
| 422 |
* @param string format for returned date |
| 423 |
* |
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* @access public |
| 425 |
* |
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* @return string date in given format |
| 427 |
*/ |
| 428 |
|
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function endOfPrevMonth($day="",$month="",$year="",$format="%Y%m%d") |
| 430 |
{ |
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if(empty($year)) |
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$year = Date_Calc::dateNow("%Y"); |
| 433 |
if(empty($month)) |
| 434 |
$month = Date_Calc::dateNow("%m"); |
| 435 |
if(empty($day)) |
| 436 |
$day = Date_Calc::dateNow("%d"); |
| 437 |
|
| 438 |
if($month > 1) |
| 439 |
{ |
| 440 |
$month--; |
| 441 |
} |
| 442 |
else |
| 443 |
{ |
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$year--; |
| 445 |
$month=12; |
| 446 |
} |
| 447 |
|
| 448 |
$day = Date_Calc::daysInMonth($month,$year); |
| 449 |
|
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return Date_Calc::dateFormat($day,$month,$year,$format); |
| 451 |
|
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} // end func endOfPrevMonth |
| 453 |
|
| 454 |
/** |
| 455 |
* Returns date of the next weekday of given date, |
| 456 |
* skipping from Friday to Monday. |
| 457 |
* |
| 458 |
* @param string year in format CCYY, default current local year |
| 459 |
* @param string month in format MM, default current local month |
| 460 |
* @param string day in format DD, default current local day |
| 461 |
* @param string format for returned date |
| 462 |
* |
| 463 |
* @access public |
| 464 |
* |
| 465 |
* @return string date in given format |
| 466 |
*/ |
| 467 |
|
| 468 |
function nextWeekday($day="",$month="",$year="",$format="%Y%m%d") |
| 469 |
{ |
| 470 |
if(empty($year)) |
| 471 |
$year = Date_Calc::dateNow("%Y"); |
| 472 |
if(empty($month)) |
| 473 |
$month = Date_Calc::dateNow("%m"); |
| 474 |
if(empty($day)) |
| 475 |
$day = Date_Calc::dateNow("%d"); |
| 476 |
|
| 477 |
$days = Date_Calc::dateToDays($day,$month,$year); |
| 478 |
|
| 479 |
if(Date_Calc::dayOfWeek($day,$month,$year) == 5) |
| 480 |
$days += 3; |
| 481 |
elseif(Date_Calc::dayOfWeek($day,$month,$year) == 6) |
| 482 |
$days += 2; |
| 483 |
else |
| 484 |
$days += 1; |
| 485 |
|
| 486 |
return(Date_Calc::daysToDate($days,$format)); |
| 487 |
|
| 488 |
} // end func nextWeekday |
| 489 |
|
| 490 |
/** |
| 491 |
* Returns date of the previous weekday, |
| 492 |
* skipping from Monday to Friday. |
| 493 |
* |
| 494 |
* @param string year in format CCYY, default current local year |
| 495 |
* @param string month in format MM, default current local month |
| 496 |
* @param string day in format DD, default current local day |
| 497 |
* @param string format for returned date |
| 498 |
* |
| 499 |
* @access public |
| 500 |
* |
| 501 |
* @return string date in given format |
| 502 |
*/ |
| 503 |
|
| 504 |
function prevWeekday($day="",$month="",$year="",$format="%Y%m%d") |
| 505 |
{ |
| 506 |
if(empty($year)) |
| 507 |
$year = Date_Calc::dateNow("%Y"); |
| 508 |
if(empty($month)) |
| 509 |
$month = Date_Calc::dateNow("%m"); |
| 510 |
if(empty($day)) |
| 511 |
$day = Date_Calc::dateNow("%d"); |
| 512 |
|
| 513 |
$days = Date_Calc::dateToDays($day,$month,$year); |
| 514 |
|
| 515 |
if(Date_Calc::dayOfWeek($day,$month,$year) == 1) |
| 516 |
$days -= 3; |
| 517 |
elseif(Date_Calc::dayOfWeek($day,$month,$year) == 0) |
| 518 |
$days -= 2; |
| 519 |
else |
| 520 |
$days -= 1; |
| 521 |
|
| 522 |
return(Date_Calc::daysToDate($days,$format)); |
| 523 |
|
| 524 |
} // end func prevWeekday |
| 525 |
|
| 526 |
/** |
| 527 |
* Returns date of the next specific day of the week |
| 528 |
* from the given date. |
| 529 |
* |
| 530 |
* @param int day of week, 0=Sunday |
| 531 |
* @param string year in format CCYY, default current local year |
| 532 |
* @param string month in format MM, default current local month |
| 533 |
* @param string day in format DD, default current local day |
| 534 |
* @param boolean onOrAfter if true and days are same, returns current day |
| 535 |
* @param string format for returned date |
| 536 |
* |
| 537 |
* @access public |
| 538 |
* |
| 539 |
* @return string date in given format |
| 540 |
*/ |
| 541 |
|
| 542 |
function nextDayOfWeek($dow,$day="",$month="",$year="",$format="%Y%m%d",$onOrAfter=false) |
| 543 |
{ |
| 544 |
if(empty($year)) |
| 545 |
$year = Date_Calc::dateNow("%Y"); |
| 546 |
if(empty($month)) |
| 547 |
$month = Date_Calc::dateNow("%m"); |
| 548 |
if(empty($day)) |
| 549 |
$day = Date_Calc::dateNow("%d"); |
| 550 |
|
| 551 |
$days = Date_Calc::dateToDays($day,$month,$year); |
| 552 |
$curr_weekday = Date_Calc::dayOfWeek($day,$month,$year); |
| 553 |
|
| 554 |
if($curr_weekday == $dow) |
| 555 |
{ |
| 556 |
if(!$onOrAfter) |
| 557 |
$days += 7; |
| 558 |
} |
| 559 |
elseif($curr_weekday > $dow) |
| 560 |
$days += 7 - ( $curr_weekday - $dow ); |
| 561 |
else |
| 562 |
$days += $dow - $curr_weekday; |
| 563 |
|
| 564 |
return(Date_Calc::daysToDate($days,$format)); |
| 565 |
|
| 566 |
} // end func nextDayOfWeek |
| 567 |
|
| 568 |
/** |
| 569 |
* Returns date of the previous specific day of the week |
| 570 |
* from the given date. |
| 571 |
* |
| 572 |
* @param int day of week, 0=Sunday |
| 573 |
* @param string year in format CCYY, default current local year |
| 574 |
* @param string month in format MM, default current local month |
| 575 |
* @param string day in format DD, default current local day |
| 576 |
* @param boolean onOrBefore if true and days are same, returns current day |
| 577 |
* @param string format for returned date |
| 578 |
* |
| 579 |
* @access public |
| 580 |
* |
| 581 |
* @return string date in given format |
| 582 |
*/ |
| 583 |
|
| 584 |
function prevDayOfWeek($dow,$day="",$month="",$year="",$format="%Y%m%d",$onOrBefore=false) |
| 585 |
{ |
| 586 |
if(empty($year)) |
| 587 |
$year = Date_Calc::dateNow("%Y"); |
| 588 |
if(empty($month)) |
| 589 |
$month = Date_Calc::dateNow("%m"); |
| 590 |
if(empty($day)) |
| 591 |
$day = Date_Calc::dateNow("%d"); |
| 592 |
|
| 593 |
$days = Date_Calc::dateToDays($day,$month,$year); |
| 594 |
$curr_weekday = Date_Calc::dayOfWeek($day,$month,$year); |
| 595 |
|
| 596 |
if($curr_weekday == $dow) |
| 597 |
{ |
| 598 |
if(!$onOrBefore) |
| 599 |
$days -= 7; |
| 600 |
} |
| 601 |
elseif($curr_weekday < $dow) |
| 602 |
$days -= 7 - ( $dow - $curr_weekday ); |
| 603 |
else |
| 604 |
$days -= $curr_weekday - $dow; |
| 605 |
|
| 606 |
return(Date_Calc::daysToDate($days,$format)); |
| 607 |
|
| 608 |
} // end func prevDayOfWeek |
| 609 |
|
| 610 |
/** |
| 611 |
* Returns date of the next specific day of the week |
| 612 |
* on or before the given date. |
| 613 |
* |
| 614 |
* @param int day of week, 0=Sunday |
| 615 |
* @param string year in format CCYY, default current local year |
| 616 |
* @param string month in format MM, default current local month |
| 617 |
* @param string day in format DD, default current local day |
| 618 |
* @param string format for returned date |
| 619 |
* |
| 620 |
* @access public |
| 621 |
* |
| 622 |
* @return string date in given format |
| 623 |
*/ |
| 624 |
|
| 625 |
function nextDayOfWeekOnOrAfter($dow,$day="",$month="",$year="",$format="%Y%m%d") |
| 626 |
{ |
| 627 |
return(Date_Calc::nextDayOfWeek($dow,$day="",$month="",$year="",$format="%Y%m%d",true)); |
| 628 |
} // end func nextDayOfWeekOnOrAfter |
| 629 |
|
| 630 |
/** |
| 631 |
* Returns date of the previous specific day of the week |
| 632 |
* on or before the given date. |
| 633 |
* |
| 634 |
* @param int day of week, 0=Sunday |
| 635 |
* @param string year in format CCYY, default current local year |
| 636 |
* @param string month in format MM, default current local month |
| 637 |
* @param string day in format DD, default current local day |
| 638 |
* @param string format for returned date |
| 639 |
* |
| 640 |
* @access public |
| 641 |
* |
| 642 |
* @return string date in given format |
| 643 |
*/ |
| 644 |
|
| 645 |
function prevDayOfWeekOnOrBefore($dow,$day="",$month="",$year="",$format="%Y%m%d") |
| 646 |
{ |
| 647 |
return(Date_Calc::prevDayOfWeek($dow,$day="",$month="",$year="",$format="%Y%m%d",true)); |
| 648 |
|
| 649 |
} // end func prevDayOfWeekOnOrAfter |
| 650 |
|
| 651 |
/** |
| 652 |
* Returns date of day after given date. |
| 653 |
* |
| 654 |
* @param string year in format CCYY, default current local year |
| 655 |
* @param string month in format MM, default current local month |
| 656 |
* @param string day in format DD, default current local day |
| 657 |
* @param string format for returned date |
| 658 |
* |
| 659 |
* @access public |
| 660 |
* |
| 661 |
* @return string date in given format |
| 662 |
*/ |
| 663 |
|
| 664 |
function nextDay($day="",$month="",$year="",$format="%Y%m%d") |
| 665 |
{ |
| 666 |
if(empty($year)) |
| 667 |
$year = Date_Calc::dateNow("%Y"); |
| 668 |
if(empty($month)) |
| 669 |
$month = Date_Calc::dateNow("%m"); |
| 670 |
if(empty($day)) |
| 671 |
$day = Date_Calc::dateNow("%d"); |
| 672 |
|
| 673 |
$days = Date_Calc::dateToDays($day,$month,$year); |
| 674 |
|
| 675 |
return(Date_Calc::daysToDate($days + 1,$format)); |
| 676 |
|
| 677 |
} // end func nextDay |
| 678 |
|
| 679 |
/** |
| 680 |
* Returns date of day before given date. |
| 681 |
* |
| 682 |
* @param string year in format CCYY, default current local year |
| 683 |
* @param string month in format MM, default current local month |
| 684 |
* @param string day in format DD, default current local day |
| 685 |
* @param string format for returned date |
| 686 |
* |
| 687 |
* @access public |
| 688 |
* |
| 689 |
* @return string date in given format |
| 690 |
*/ |
| 691 |
|
| 692 |
function prevDay($day="",$month="",$year="",$format="%Y%m%d") |
| 693 |
{ |
| 694 |
if(empty($year)) |
| 695 |
$year = Date_Calc::dateNow("%Y"); |
| 696 |
if(empty($month)) |
| 697 |
$month = Date_Calc::dateNow("%m"); |
| 698 |
if(empty($day)) |
| 699 |
$day = Date_Calc::dateNow("%d"); |
| 700 |
|
| 701 |
$days = Date_Calc::dateToDays($day,$month,$year); |
| 702 |
|
| 703 |
return(Date_Calc::daysToDate($days - 1,$format)); |
| 704 |
|
| 705 |
} // end func prevDay |
| 706 |
|
| 707 |
/** |
| 708 |
* Sets century for 2 digit year. |
| 709 |
* 51-99 is 19, else 20 |
| 710 |
* |
| 711 |
* @param string 2 digit year |
| 712 |
* |
| 713 |
* @access public |
| 714 |
* |
| 715 |
* @return string 4 digit year |
| 716 |
*/ |
| 717 |
|
| 718 |
function defaultCentury($year) |
| 719 |
{ |
| 720 |
if(strlen($year) == 1) |
| 721 |
$year = "0$year"; |
| 722 |
if($year > 50) |
| 723 |
return( "19$year" ); |
| 724 |
else |
| 725 |
return( "20$year" ); |
| 726 |
|
| 727 |
} // end func defaultCentury |
| 728 |
|
| 729 |
/** |
| 730 |
* Returns number of days between two given dates. |
| 731 |
* |
| 732 |
* @param string year in format CCYY |
| 733 |
* @param string month in format MM |
| 734 |
* @param string day in format DD |
| 735 |
* @param string year in format CCYY |
| 736 |
* @param string month in format MM |
| 737 |
* @param string day in format DD |
| 738 |
* |
| 739 |
* @access public |
| 740 |
* |
| 741 |
* @return int absolute number of days between dates, |
| 742 |
* -1 if there is an error. |
| 743 |
*/ |
| 744 |
|
| 745 |
function dateDiff($day1,$month1,$year1,$day2,$month2,$year2) |
| 746 |
{ |
| 747 |
if(!Date_Calc::isValidDate($day1,$month1,$year1)) |
| 748 |
return -1; |
| 749 |
if(!Date_Calc::isValidDate($day2,$month2,$year2)) |
| 750 |
return -1; |
| 751 |
|
| 752 |
return(abs((Date_Calc::dateToDays($day1,$month1,$year1)) |
| 753 |
- (Date_Calc::dateToDays($day2,$month2,$year2)))); |
| 754 |
|
| 755 |
} // end func dateDiff |
| 756 |
|
| 757 |
/** |
| 758 |
* Find the number of days in the given month. |
| 759 |
* |
| 760 |
* @param string month in format MM, default current local month |
| 761 |
* |
| 762 |
* @access public |
| 763 |
* |
| 764 |
* @return int number of days |
| 765 |
*/ |
| 766 |
|
| 767 |
function daysInMonth($month="",$year="") |
| 768 |
{ |
| 769 |
if(empty($year)) |
| 770 |
$year = Date_Calc::dateNow("%Y"); |
| 771 |
if(empty($month)) |
| 772 |
$month = Date_Calc::dateNow("%m"); |
| 773 |
|
| 774 |
if($month == 2) |
| 775 |
{ |
| 776 |
if(Date_Calc::isLeapYear($year)) |
| 777 |
return 29; |
| 778 |
else |
| 779 |
return 28; |
| 780 |
} |
| 781 |
elseif($month == 4 or $month == 6 or $month == 9 or $month == 11) |
| 782 |
return 30; |
| 783 |
else |
| 784 |
return 31; |
| 785 |
|
| 786 |
} // end func daysInMonth |
| 787 |
|
| 788 |
/** |
| 789 |
* Returns the number of rows on a calendar month. Useful for |
| 790 |
* determining the number of rows when displaying a typical |
| 791 |
* month calendar. |
| 792 |
* |
| 793 |
* @param string month in format MM, default current local month |
| 794 |
* @param string year in format YYCC, default current local year |
| 795 |
* |
| 796 |
* @access public |
| 797 |
* |
| 798 |
* @return int number of weeks |
| 799 |
*/ |
| 800 |
|
| 801 |
function weeksInMonth($month="",$year="") |
| 802 |
{ |
| 803 |
if(empty($year)) |
| 804 |
$year = Date_Calc::dateNow("%Y"); |
| 805 |
if(empty($month)) |
| 806 |
$month = Date_Calc::dateNow("%m"); |
| 807 |
|
| 808 |
if(DATE_CALC_BEGIN_WEEKDAY == 1) |
| 809 |
{ |
| 810 |
|
| 811 |
if(Date_Calc::firstOfMonthWeekday($month,$year) == 0) |
| 812 |
$first_week_days = 1; |
| 813 |
else |
| 814 |
$first_week_days = 7 - (Date_Calc::firstOfMonthWeekday($month,$year) - 1); |
| 815 |
|
| 816 |
} |
| 817 |
else |
| 818 |
$first_week_days = 7 - Date_Calc::firstOfMonthWeekday($month,$year); |
| 819 |
|
| 820 |
return ceil(((Date_Calc::daysInMonth($month,$year) - $first_week_days) / 7) + 1); |
| 821 |
|
| 822 |
} // end func weeksInMonth |
| 823 |
|
| 824 |
/** |
| 825 |
* Find the day of the week for the first of the month of given date. |
| 826 |
* |
| 827 |
* @param string year in format CCYY, default to current local year |
| 828 |
* @param string month in format MM, default to current local month |
| 829 |
* |
| 830 |
* @access public |
| 831 |
* |
| 832 |
* @return int number of weekday for the first day, 0=Sunday |
| 833 |
*/ |
| 834 |
|
| 835 |
function firstOfMonthWeekday($month="",$year="") |
| 836 |
{ |
| 837 |
if(empty($year)) |
| 838 |
$year = Date_Calc::dateNow("%Y"); |
| 839 |
if(empty($month)) |
| 840 |
$month = Date_Calc::dateNow("%m"); |
| 841 |
|
| 842 |
return(Date_Calc::dayOfWeek("01",$month,$year)); |
| 843 |
|
| 844 |
} // end func firstOfMonthWeekday |
| 845 |
|
| 846 |
/** |
| 847 |
* Return date of first day of month of given date. |
| 848 |
* |
| 849 |
* @param string year in format CCYY, default current local year |
| 850 |
* @param string month in format MM, default current local month |
| 851 |
* @param string format for returned date |
| 852 |
* |
| 853 |
* @access public |
| 854 |
* |
| 855 |
* @return string date in given format |
| 856 |
*/ |
| 857 |
|
| 858 |
function beginOfMonth($month="",$year="",$format="%Y%m%d") |
| 859 |
{ |
| 860 |
if(empty($year)) |
| 861 |
$year = Date_Calc::dateNow("%Y"); |
| 862 |
if(empty($month)) |
| 863 |
$month = Date_Calc::dateNow("%m"); |
| 864 |
|
| 865 |
return(Date_Calc::dateFormat("01",$month,$year,$format)); |
| 866 |
|
| 867 |
} // end of func beginOfMonth |
| 868 |
|
| 869 |
/** |
| 870 |
* Find the month day of the beginning of week for given date, |
| 871 |
* using DATE_CALC_BEGIN_WEEKDAY. (can return weekday of prev month.) |
| 872 |
* |
| 873 |
* @param string year in format CCYY, default current local year |
| 874 |
* @param string month in format MM, default current local month |
| 875 |
* @param string day in format DD, default current local day |
| 876 |
* @param string format for returned date |
| 877 |
* |
| 878 |
* @access public |
| 879 |
* |
| 880 |
* @return string date in given format |
| 881 |
*/ |
| 882 |
|
| 883 |
function beginOfWeek($day="",$month="",$year="",$format="%Y%m%d") |
| 884 |
{ |
| 885 |
if(empty($year)) |
| 886 |
$year = Date_Calc::dateNow("%Y"); |
| 887 |
if(empty($month)) |
| 888 |
$month = Date_Calc::dateNow("%m"); |
| 889 |
if(empty($day)) |
| 890 |
$day = Date_Calc::dateNow("%d"); |
| 891 |
|
| 892 |
$this_weekday = Date_Calc::dayOfWeek($day,$month,$year); |
| 893 |
|
| 894 |
if(DATE_CALC_BEGIN_WEEKDAY == 1) |
| 895 |
{ |
| 896 |
if($this_weekday == 0) |
| 897 |
$beginOfWeek = Date_Calc::dateToDays($day,$month,$year) - 6; |
| 898 |
else |
| 899 |
$beginOfWeek = Date_Calc::dateToDays($day,$month,$year) |
| 900 |
- $this_weekday + 1; |
| 901 |
} |
| 902 |
else |
| 903 |
$beginOfWeek = (Date_Calc::dateToDays($day,$month,$year) |
| 904 |
- $this_weekday); |
| 905 |
|
| 906 |
|
| 907 |
/* $beginOfWeek = (Date_Calc::dateToDays($day,$month,$year) |
| 908 |
- ($this_weekday - DATE_CALC_BEGIN_WEEKDAY)); */ |
| 909 |
|
| 910 |
return(Date_Calc::daysToDate($beginOfWeek,$format)); |
| 911 |
|
| 912 |
} // end of func beginOfWeek |
| 913 |
|
| 914 |
/** |
| 915 |
* Find the month day of the end of week for given date, |
| 916 |
* using DATE_CALC_BEGIN_WEEKDAY. (can return weekday |
| 917 |
* of following month.) |
| 918 |
* |
| 919 |
* @param string year in format CCYY, default current local year |
| 920 |
* @param string month in format MM, default current local month |
| 921 |
* @param string day in format DD, default current local day |
| 922 |
* @param string format for returned date |
| 923 |
* |
| 924 |
* @access public |
| 925 |
* |
| 926 |
* @return string date in given format |
| 927 |
*/ |
| 928 |
|
| 929 |
function endOfWeek($day="",$month="",$year="",$format="%Y%m%d") |
| 930 |
{ |
| 931 |
if(empty($year)) |
| 932 |
$year = Date_Calc::dateNow("%Y"); |
| 933 |
if(empty($month)) |
| 934 |
$month = Date_Calc::dateNow("%m"); |
| 935 |
if(empty($day)) |
| 936 |
$day = Date_Calc::dateNow("%d"); |
| 937 |
|
| 938 |
$this_weekday = Date_Calc::dayOfWeek($day,$month,$year); |
| 939 |
|
| 940 |
$last_dayOfWeek = (Date_Calc::dateToDays($day,$month,$year) |
| 941 |
+ (6 - $this_weekday + DATE_CALC_BEGIN_WEEKDAY)); |
| 942 |
|
| 943 |
return(Date_Calc::daysToDate($last_dayOfWeek,$format)); |
| 944 |
|
| 945 |
} // end func endOfWeek |
| 946 |
|
| 947 |
/** |
| 948 |
* Find the month day of the beginning of week after given date, |
| 949 |
* using DATE_CALC_BEGIN_WEEKDAY. (can return weekday of prev month.) |
| 950 |
* |
| 951 |
* @param string year in format CCYY, default current local year |
| 952 |
* @param string month in format MM, default current local month |
| 953 |
* @param string day in format DD, default current local day |
| 954 |
* @param string format for returned date |
| 955 |
* |
| 956 |
* @access public |
| 957 |
* |
| 958 |
* @return string date in given format |
| 959 |
*/ |
| 960 |
|
| 961 |
function beginOfNextWeek($day="",$month="",$year="",$format="%Y%m%d") |
| 962 |
{ |
| 963 |
if(empty($year)) |
| 964 |
$year = Date_Calc::dateNow("%Y"); |
| 965 |
if(empty($month)) |
| 966 |
$month = Date_Calc::dateNow("%m"); |
| 967 |
if(empty($day)) |
| 968 |
$day = Date_Calc::dateNow("%d"); |
| 969 |
|
| 970 |
$date = Date_Calc::daysToDate(Date_Calc::dateToDays($day+7,$month,$year),"%Y%m%d"); |
| 971 |
|
| 972 |
$next_week_year = substr($date,0,4); |
| 973 |
$next_week_month = substr($date,4,2); |
| 974 |
$next_week_day = substr($date,6,2); |
| 975 |
|
| 976 |
$this_weekday = Date_Calc::dayOfWeek($next_week_day,$next_week_month,$next_week_year); |
| 977 |
|
| 978 |
$beginOfWeek = (Date_Calc::dateToDays($next_week_day,$next_week_month,$next_week_year) |
| 979 |
- ($this_weekday - DATE_CALC_BEGIN_WEEKDAY)); |
| 980 |
|
| 981 |
return(Date_Calc::daysToDate($beginOfWeek,$format)); |
| 982 |
|
| 983 |
} // end func beginOfNextWeek |
| 984 |
|
| 985 |
/** |
| 986 |
* Find the month day of the beginning of week before given date, |
| 987 |
* using DATE_CALC_BEGIN_WEEKDAY. (can return weekday of prev month.) |
| 988 |
* |
| 989 |
* @param string year in format CCYY, default current local year |
| 990 |
* @param string month in format MM, default current local month |
| 991 |
* @param string day in format DD, default current local day |
| 992 |
* @param string format for returned date |
| 993 |
* |
| 994 |
* @access public |
| 995 |
* |
| 996 |
* @return string date in given format |
| 997 |
*/ |
| 998 |
|
| 999 |
function beginOfPrevWeek($day="",$month="",$year="",$format="%Y%m%d") |
| 1000 |
{ |
| 1001 |
if(empty($year)) |
| 1002 |
$year = Date_Calc::dateNow("%Y"); |
| 1003 |
if(empty($month)) |
| 1004 |
$month = Date_Calc::dateNow("%m"); |
| 1005 |
if(empty($day)) |
| 1006 |
$day = Date_Calc::dateNow("%d"); |
| 1007 |
|
| 1008 |
$date = Date_Calc::daysToDate(Date_Calc::dateToDays($day-7,$month,$year),"%Y%m%d"); |
| 1009 |
|
| 1010 |
$next_week_year = substr($date,0,4); |
| 1011 |
$next_week_month = substr($date,4,2); |
| 1012 |
$next_week_day = substr($date,6,2); |
| 1013 |
|
| 1014 |
$this_weekday = Date_Calc::dayOfWeek($next_week_day,$next_week_month,$next_week_year); |
| 1015 |
|
| 1016 |
$beginOfWeek = (Date_Calc::dateToDays($next_week_day,$next_week_month,$next_week_year) |
| 1017 |
- ($this_weekday - DATE_CALC_BEGIN_WEEKDAY)); |
| 1018 |
|
| 1019 |
return(Date_Calc::daysToDate($beginOfWeek,$format)); |
| 1020 |
|
| 1021 |
} // end func beginOfPrevWeek |
| 1022 |
|
| 1023 |
/** |
| 1024 |
* Return an array with days in week |
| 1025 |
* |
| 1026 |
* @param string year in format CCYY, default current local year |
| 1027 |
* @param string month in format MM, default current local month |
| 1028 |
* @param string day in format DD, default current local day |
| 1029 |
* @param string format for returned date |
| 1030 |
* |
| 1031 |
* @access public |
| 1032 |
* |
| 1033 |
* @return array $week[$weekday] |
| 1034 |
*/ |
| 1035 |
|
| 1036 |
function getCalendarWeek($day="",$month="",$year="",$format="%Y%m%d") |
| 1037 |
{ |
| 1038 |
if(empty($year)) |
| 1039 |
$year = Date_Calc::dateNow("%Y"); |
| 1040 |
if(empty($month)) |
| 1041 |
$month = Date_Calc::dateNow("%m"); |
| 1042 |
if(empty($day)) |
| 1043 |
$day = Date_Calc::dateNow("%d"); |
| 1044 |
|
| 1045 |
$week_array = array(); |
| 1046 |
|
| 1047 |
// date for the column of week |
| 1048 |
|
| 1049 |
$curr_day = Date_Calc::beginOfWeek($day,$month,$year,"%E"); |
| 1050 |
|
| 1051 |
for($counter=0; $counter <= 6; $counter++) |
| 1052 |
{ |
| 1053 |
$week_array[$counter] = Date_Calc::daysToDate($curr_day,$format); |
| 1054 |
$curr_day++; |
| 1055 |
} |
| 1056 |
|
| 1057 |
return $week_array; |
| 1058 |
|
| 1059 |
} // end func getCalendarWeek |
| 1060 |
|
| 1061 |
/** |
| 1062 |
* Return a set of arrays to construct a calendar month for |
| 1063 |
* the given date. |
| 1064 |
* |
| 1065 |
* @param string year in format CCYY, default current local year |
| 1066 |
* @param string month in format MM, default current local month |
| 1067 |
* @param string format for returned date |
| 1068 |
* |
| 1069 |
* @access public |
| 1070 |
* |
| 1071 |
* @return array $month[$row][$col] |
| 1072 |
*/ |
| 1073 |
|
| 1074 |
function getCalendarMonth($month="",$year="",$format="%Y%m%d") |
| 1075 |
{ |
| 1076 |
if(empty($year)) |
| 1077 |
$year = Date_Calc::dateNow("%Y"); |
| 1078 |
if(empty($month)) |
| 1079 |
$month = Date_Calc::dateNow("%m"); |
| 1080 |
|
| 1081 |
$month_array = array(); |
| 1082 |
|
| 1083 |
// date for the first row, first column of calendar month |
| 1084 |
if(DATE_CALC_BEGIN_WEEKDAY == 1) |
| 1085 |
{ |
| 1086 |
if(Date_Calc::firstOfMonthWeekday($month,$year) == 0) |
| 1087 |
$curr_day = Date_Calc::dateToDays("01",$month,$year) - 6; |
| 1088 |
else |
| 1089 |
$curr_day = Date_Calc::dateToDays("01",$month,$year) |
| 1090 |
- Date_Calc::firstOfMonthWeekday($month,$year) + 1; |
| 1091 |
} |
| 1092 |
else |
| 1093 |
$curr_day = (Date_Calc::dateToDays("01",$month,$year) |
| 1094 |
- Date_Calc::firstOfMonthWeekday($month,$year)); |
| 1095 |
|
| 1096 |
// number of days in this month |
| 1097 |
$daysInMonth = Date_Calc::daysInMonth($month,$year); |
| 1098 |
|
| 1099 |
$weeksInMonth = Date_Calc::weeksInMonth($month,$year); |
| 1100 |
for($row_counter=0; $row_counter < $weeksInMonth; $row_counter++) |
| 1101 |
{ |
| 1102 |
for($column_counter=0; $column_counter <= 6; $column_counter++) |
| 1103 |
{ |
| 1104 |
$month_array[$row_counter][$column_counter] = Date_Calc::daysToDate($curr_day,$format); |
| 1105 |
$curr_day++; |
| 1106 |
} |
| 1107 |
} |
| 1108 |
|
| 1109 |
return $month_array; |
| 1110 |
|
| 1111 |
} // end func getCalendarMonth |
| 1112 |
|
| 1113 |
/** |
| 1114 |
* Return a set of arrays to construct a calendar year for |
| 1115 |
* the given date. |
| 1116 |
* |
| 1117 |
* @param string year in format CCYY, default current local year |
| 1118 |
* @param string format for returned date |
| 1119 |
* |
| 1120 |
* @access public |
| 1121 |
* |
| 1122 |
* @return array $year[$month][$row][$col] |
| 1123 |
*/ |
| 1124 |
|
| 1125 |
function getCalendarYear($year="",$format="%Y%m%d") |
| 1126 |
{ |
| 1127 |
if(empty($year)) |
| 1128 |
$year = Date_Calc::dateNow("%Y"); |
| 1129 |
|
| 1130 |
$year_array = array(); |
| 1131 |
|
| 1132 |
for($curr_month=0; $curr_month <=11; $curr_month++) |
| 1133 |
$year_array[$curr_month] = Date_Calc::getCalendarMonth(sprintf("%02d",$curr_month+1),$year,$format); |
| 1134 |
|
| 1135 |
return $year_array; |
| 1136 |
|
| 1137 |
} // end func getCalendarYear |
| 1138 |
|
| 1139 |
/** |
| 1140 |
* Converts a date to number of days since a |
| 1141 |
* distant unspecified epoch. |
| 1142 |
* |
| 1143 |
* @param string year in format CCYY |
| 1144 |
* @param string month in format MM |
| 1145 |
* @param string day in format DD |
| 1146 |
* |
| 1147 |
* @access public |
| 1148 |
* |
| 1149 |
* @return integer number of days |
| 1150 |
*/ |
| 1151 |
|
| 1152 |
function dateToDays($day,$month,$year) |
| 1153 |
{ |
| 1154 |
|
| 1155 |
$century = substr($year,0,2); |
| 1156 |
$year = substr($year,2,2); |
| 1157 |
|
| 1158 |
if($month > 2) |
| 1159 |
$month -= 3; |
| 1160 |
else |
| 1161 |
{ |
| 1162 |
$month += 9; |
| 1163 |
if($year) |
| 1164 |
$year--; |
| 1165 |
else |
| 1166 |
{ |
| 1167 |
$year = 99; |
| 1168 |
$century --; |
| 1169 |
} |
| 1170 |
} |
| 1171 |
|
| 1172 |
return ( floor(( 146097 * $century) / 4 ) + |
| 1173 |
floor(( 1461 * $year) / 4 ) + |
| 1174 |
floor(( 153 * $month + 2) / 5 ) + |
| 1175 |
$day + 1721119); |
| 1176 |
|
| 1177 |
} // end func dateToDays |
| 1178 |
|
| 1179 |
/** |
| 1180 |
* Converts number of days to a distant unspecified epoch. |
| 1181 |
* |
| 1182 |
* @param int number of days |
| 1183 |
* @param string format for returned date |
| 1184 |
* |
| 1185 |
* @access public |
| 1186 |
* |
| 1187 |
* @return string date in specified format |
| 1188 |
*/ |
| 1189 |
|
| 1190 |
function daysToDate($days,$format="%Y%m%d") |
| 1191 |
{ |
| 1192 |
|
| 1193 |
$days -= 1721119; |
| 1194 |
$century = floor(( 4 * $days - 1) / 146097); |
| 1195 |
$days = floor(4 * $days - 1 - 146097 * $century); |
| 1196 |
$day = floor($days / 4); |
| 1197 |
|
| 1198 |
$year = floor(( 4 * $day + 3) / 1461); |
| 1199 |
$day = floor(4 * $day + 3 - 1461 * $year); |
| 1200 |
$day = floor(($day + 4) / 4); |
| 1201 |
|
| 1202 |
$month = floor(( 5 * $day - 3) / 153); |
| 1203 |
$day = floor(5 * $day - 3 - 153 * $month); |
| 1204 |
$day = floor(($day + 5) / 5); |
| 1205 |
|
| 1206 |
if($month < 10) |
| 1207 |
$month +=3; |
| 1208 |
else |
| 1209 |
{ |
| 1210 |
$month -=9; |
| 1211 |
if($year++ == 99) |
| 1212 |
{ |
| 1213 |
$year = 0; |
| 1214 |
$century++; |
| 1215 |
} |
| 1216 |
} |
| 1217 |
|
| 1218 |
$century = sprintf("%02d",$century); |
| 1219 |
$year = sprintf("%02d",$year); |
| 1220 |
|
| 1221 |
return(Date_Calc::dateFormat($day,$month,$century.$year,$format)); |
| 1222 |
|
| 1223 |
} // end func daysToDate |
| 1224 |
|
| 1225 |
/** |
| 1226 |
* Calculates the date of the Nth weekday of the month, |
| 1227 |
* such as the second Saturday of January 2000. |
| 1228 |
* |
| 1229 |
* @param string occurance: 1=first, 2=second, 3=third, etc. |
| 1230 |
* @param string dayOfWeek: 0=Sunday, 1=Monday, etc. |
| 1231 |
* @param string year in format CCYY |
| 1232 |
* @param string month in format MM |
| 1233 |
* @param string format for returned date |
| 1234 |
* |
| 1235 |
* @access public |
| 1236 |
* |
| 1237 |
* @return string date in given format |
| 1238 |
*/ |
| 1239 |
|
| 1240 |
function NWeekdayOfMonth($occurance,$dayOfWeek,$month,$year,$format="%Y%m%d") { |
| 1241 |
|
| 1242 |
$year = sprintf("%04d",$year); |
| 1243 |
$month = sprintf("%02d",$month); |
| 1244 |
|
| 1245 |
$DOW1day = sprintf("%02d",(($occurance - 1) * 7 + 1)); |
| 1246 |
$DOW1 = Date_Calc::dayOfWeek($month,$year,$DOW1day); |
| 1247 |
|
| 1248 |
$wdate = ($occurance - 1) * 7 + 1 + |
| 1249 |
(7 + $dayOfWeek - $DOW1) % 7; |
| 1250 |
|
| 1251 |
if( $wdate > Date_Calc::daysInMonth($month,$year)) |
| 1252 |
return -1; |
| 1253 |
else |
| 1254 |
return(Date_Calc::dateFormat($month,$year,$wdate,$format)); |
| 1255 |
|
| 1256 |
} // end func NWeekdayOfMonth |
| 1257 |
|
| 1258 |
/** |
| 1259 |
* Formats the date in the given format, much like |
| 1260 |
* strfmt(). This function is used to alleviate the |
| 1261 |
* problem with 32-bit numbers for dates pre 1970 |
| 1262 |
* or post 2038, as strfmt() has on most systems. |
| 1263 |
* Most of the formatting options are compatible. |
| 1264 |
* |
| 1265 |
* formatting options: |
| 1266 |
* |
| 1267 |
* %a abbreviated weekday name (Sun, Mon, Tue) |
| 1268 |
* %A full weekday name (Sunday, Monday, Tuesday) |
| 1269 |
* %b abbreviated month name (Jan, Feb, Mar) |
| 1270 |
* %B full month name (January, February, March) |
| 1271 |
* %d day of month (range 00 to 31) |
| 1272 |
* %e day of month, single digit (range 0 to 31) |
| 1273 |
* %E number of days since unspecified epoch (integer) |
| 1274 |
* (%E is useful for passing a date in a URL as |
| 1275 |
* an integer value. Then simply use |
| 1276 |
* daysToDate() to convert back to a date.) |
| 1277 |
* %j day of year (range 001 to 366) |
| 1278 |
* %m month as decimal number (range 1 to 12) |
| 1279 |
* %n newline character (\n) |
| 1280 |
* %t tab character (\t) |
| 1281 |
* %w weekday as decimal (0 = Sunday) |
| 1282 |
* %U week number of current year, first sunday as first week |
| 1283 |
* %y year as decimal (range 00 to 99) |
| 1284 |
* %Y year as decimal including century (range 0000 to 9999) |
| 1285 |
* %% literal '%' |
| 1286 |
* |
| 1287 |
* @param string year in format CCYY |
| 1288 |
* @param string month in format MM |
| 1289 |
* @param string day in format DD |
| 1290 |
* @param string format for returned date |
| 1291 |
* |
| 1292 |
* @access public |
| 1293 |
* |
| 1294 |
* @return string date in given format |
| 1295 |
*/ |
| 1296 |
|
| 1297 |
function dateFormat($day,$month,$year,$format) |
| 1298 |
{ |
| 1299 |
if(!Date_Calc::isValidDate($day,$month,$year)) |
| 1300 |
{ |
| 1301 |
$year = Date_Calc::dateNow("%Y"); |
| 1302 |
$month = Date_Calc::dateNow("%m"); |
| 1303 |
$day = Date_Calc::dateNow("%d"); |
| 1304 |
} |
| 1305 |
|
| 1306 |
$output = ""; |
| 1307 |
|
| 1308 |
for($strpos = 0; $strpos < strlen($format); $strpos++) |
| 1309 |
{ |
| 1310 |
$char = substr($format,$strpos,1); |
| 1311 |
if($char == "%") |
| 1312 |
{ |
| 1313 |
$nextchar = substr($format,$strpos + 1,1); |
| 1314 |
switch($nextchar) |
| 1315 |
{ |
| 1316 |
case "a": |
| 1317 |
$output .= Date_Calc::getWeekdayAbbrname($day,$month,$year); |
| 1318 |
break; |
| 1319 |
case "A": |
| 1320 |
$output .= Date_Calc::getWeekdayFullname($day,$month,$year); |
| 1321 |
break; |
| 1322 |
case "b": |
| 1323 |
$output .= Date_Calc::getMonthAbbrname($month); |
| 1324 |
break; |
| 1325 |
case "B": |
| 1326 |
$output .= Date_Calc::getMonthFullname($month); |
| 1327 |
break; |
| 1328 |
case "d": |
| 1329 |
$output .= sprintf("%02d",$day); |
| 1330 |
break; |
| 1331 |
case "e": |
| 1332 |
$output .= $day; |
| 1333 |
break; |
| 1334 |
case "E": |
| 1335 |
$output .= Date_Calc::dateToDays($day,$month,$year); |
| 1336 |
break; |
| 1337 |
case "j": |
| 1338 |
$output .= Date_Calc::julianDate($day,$month,$year); |
| 1339 |
break; |
| 1340 |
case "m": |
| 1341 |
$output .= sprintf("%02d",$month); |
| 1342 |
break; |
| 1343 |
case "n": |
| 1344 |
$output .= "\n"; |
| 1345 |
break; |
| 1346 |
case "t": |
| 1347 |
$output .= "\t"; |
| 1348 |
break; |
| 1349 |
case "w": |
| 1350 |
$output .= Date_Calc::dayOfWeek($day,$month,$year); |
| 1351 |
break; |
| 1352 |
case "U": |
| 1353 |
$output .= Date_Calc::weekOfYear($day,$month,$year); |
| 1354 |
break; |
| 1355 |
case "y": |
| 1356 |
$output .= substr($year,2,2); |
| 1357 |
break; |
| 1358 |
case "Y": |
| 1359 |
$output .= $year; |
| 1360 |
break; |
| 1361 |
case "%": |
| 1362 |
$output .= "%"; |
| 1363 |
break; |
| 1364 |
default: |
| 1365 |
$output .= $char.$nextchar; |
| 1366 |
} |
| 1367 |
$strpos++; |
| 1368 |
} |
| 1369 |
else |
| 1370 |
{ |
| 1371 |
$output .= $char; |
| 1372 |
} |
| 1373 |
} |
| 1374 |
return $output; |
| 1375 |
|
| 1376 |
} // end func dateFormat |
| 1377 |
|
| 1378 |
/** |
| 1379 |
* Returns the current local year in format CCYY |
| 1380 |
* |
| 1381 |
* @access public |
| 1382 |
* |
| 1383 |
* @return string year in format CCYY |
| 1384 |
*/ |
| 1385 |
|
| 1386 |
function getYear() |
| 1387 |
{ |
| 1388 |
return Date_Calc::dateNow("%Y"); |
| 1389 |
|
| 1390 |
} // end func getYear |
| 1391 |
|
| 1392 |
/** |
| 1393 |
* Returns the current local month in format MM |
| 1394 |
* |
| 1395 |
* @access public |
| 1396 |
* |
| 1397 |
* @return string month in format MM |
| 1398 |
*/ |
| 1399 |
|
| 1400 |
function getMonth() |
| 1401 |
{ |
| 1402 |
return Date_Calc::dateNow("%m"); |
| 1403 |
|
| 1404 |
} // end func getMonth |
| 1405 |
|
| 1406 |
/** |
| 1407 |
* Returns the current local day in format DD |
| 1408 |
* |
| 1409 |
* @access public |
| 1410 |
* |
| 1411 |
* @return string day in format DD |
| 1412 |
*/ |
| 1413 |
|
| 1414 |
function getDay() |
| 1415 |
{ |
| 1416 |
return Date_Calc::dateNow("%d"); |
| 1417 |
|
| 1418 |
} // end func getDay |
| 1419 |
|
| 1420 |
/** |
| 1421 |
* Returns the full month name for the given month |
| 1422 |
* |
| 1423 |
* @param string month in format MM |
| 1424 |
* |
| 1425 |
* @access public |
| 1426 |
* |
| 1427 |
* @return string full month name |
| 1428 |
*/ |
| 1429 |
|
| 1430 |
function getMonthFullname($month) |
| 1431 |
{ |
| 1432 |
$month = (int)$month; |
| 1433 |
|
| 1434 |
if(empty($month)) |
| 1435 |
$month = Date_Calc::dateNow("%m"); |
| 1436 |
|
| 1437 |
$month_names = Date_Calc::getMonthNames(); |
| 1438 |
return $month_names[$month]; |
| 1439 |
// getMonthNames returns months with correct indexes |
| 1440 |
//return $month_names[($month - 1)]; |
| 1441 |
|
| 1442 |
} // end func getMonthFullname |
| 1443 |
|
| 1444 |
/** |
| 1445 |
* Returns the abbreviated month name for the given month |
| 1446 |
* |
| 1447 |
* @param string month in format MM |
| 1448 |
* @param int optional length of abbreviation, default is 3 |
| 1449 |
* |
| 1450 |
* @access public |
| 1451 |
* |
| 1452 |
* @return string abbreviated month name |
| 1453 |
* @see Date_Calc::getMonthFullname |
| 1454 |
*/ |
| 1455 |
|
| 1456 |
function getMonthAbbrname($month,$length=3) |
| 1457 |
{ |
| 1458 |
$month = (int)$month; |
| 1459 |
|
| 1460 |
if(empty($month)) |
| 1461 |
$month = Date_Calc::dateNow("%m"); |
| 1462 |
return substr(Date_Calc::getMonthFullname($month), 0, $length); |
| 1463 |
} // end func getMonthAbbrname |
| 1464 |
|
| 1465 |
/** |
| 1466 |
* Returns the full weekday name for the given date |
| 1467 |
* |
| 1468 |
* @param string year in format CCYY, default current local year |
| 1469 |
* @param string month in format MM, default current local month |
| 1470 |
* @param string day in format DD, default current local day |
| 1471 |
* |
| 1472 |
* @access public |
| 1473 |
* |
| 1474 |
* @return string full month name |
| 1475 |
*/ |
| 1476 |
|
| 1477 |
function getWeekdayFullname($day="",$month="",$year="") |
| 1478 |
{ |
| 1479 |
if(empty($year)) |
| 1480 |
$year = Date_Calc::dateNow("%Y"); |
| 1481 |
if(empty($month)) |
| 1482 |
$month = Date_Calc::dateNow("%m"); |
| 1483 |
if(empty($day)) |
| 1484 |
$day = Date_Calc::dateNow("%d"); |
| 1485 |
|
| 1486 |
$weekday_names = Date_Calc::getWeekDays(); |
| 1487 |
$weekday = Date_Calc::dayOfWeek($day,$month,$year); |
| 1488 |
|
| 1489 |
return $weekday_names[$weekday]; |
| 1490 |
|
| 1491 |
} // end func getWeekdayFullname |
| 1492 |
|
| 1493 |
/** |
| 1494 |
* Returns the abbreviated weekday name for the given date |
| 1495 |
* |
| 1496 |
* @param string year in format CCYY, default current local year |
| 1497 |
* @param string month in format MM, default current local month |
| 1498 |
* @param string day in format DD, default current local day |
| 1499 |
* @param int optional length of abbreviation, default is 3 |
| 1500 |
* |
| 1501 |
* @access public |
| 1502 |
* |
| 1503 |
* @return string full month name |
| 1504 |
* @see Date_Calc::getWeekdayFullname |
| 1505 |
*/ |
| 1506 |
|
| 1507 |
function getWeekdayAbbrname($day="",$month="",$year="",$length=3) |
| 1508 |
{ |
| 1509 |
if(empty($year)) |
| 1510 |
$year = Date_Calc::dateNow("%Y"); |
| 1511 |
if(empty($month)) |
| 1512 |
$month = Date_Calc::dateNow("%m"); |
| 1513 |
if(empty($day)) |
| 1514 |
$day = Date_Calc::dateNow("%d"); |
| 1515 |
return substr(Date_Calc::getWeekdayFullname($day,$month,$year),0,$length); |
| 1516 |
} // end func getWeekdayFullname |
| 1517 |
|
| 1518 |
/** |
| 1519 |
* Returns the numeric month from the month name or an abreviation |
| 1520 |
* |
| 1521 |
* Both August and Aug would return 8. |
| 1522 |
* Month name is case insensitive. |
| 1523 |
* |
| 1524 |
* @param string month name |
| 1525 |
* @return integer month number |
| 1526 |
*/ |
| 1527 |
function getMonthFromFullName($month){ |
| 1528 |
$month = strtolower($month); |
| 1529 |
$months = Date_Calc::getMonthNames(); |
| 1530 |
while(list($id, $name) = each($months)){ |
| 1531 |
if(ereg($month, strtolower($name))){ |
| 1532 |
return($id); |
| 1533 |
} |
| 1534 |
} |
| 1535 |
return(0); |
| 1536 |
} |
| 1537 |
|
| 1538 |
/** |
| 1539 |
* Retunrs an array of month names |
| 1540 |
* |
| 1541 |
* Used to take advantage of the setlocale function to return |
| 1542 |
* language specific month names. |
| 1543 |
* XXX cache values to some global array to avoid preformace hits when called more than once. |
| 1544 |
* |
| 1545 |
* @returns array An array of month names |
| 1546 |
*/ |
| 1547 |
function getMonthNames(){ |
| 1548 |
for($i=1;$i<13;$i++){ |
| 1549 |
$months[$i] = strftime('%B', mktime(0, 0, 0, $i, 1, 2001)); |
| 1550 |
} |
| 1551 |
return($months); |
| 1552 |
} |
| 1553 |
|
| 1554 |
/** |
| 1555 |
* Returns an array of week days |
| 1556 |
* |
| 1557 |
* Used to take advantage of the setlocale function to |
| 1558 |
* return language specific week days |
| 1559 |
* XXX cache values to some global array to avoid preformace hits when called more than once. |
| 1560 |
* |
| 1561 |
* @returns array An array of week day names |
| 1562 |
*/ |
| 1563 |
function getWeekDays(){ |
| 1564 |
for($i=0;$i<7;$i++){ |
| 1565 |
$weekdays[$i] = strftime('%A', mktime(0, 0, 0, 1, $i, 2001)); |
| 1566 |
} |
| 1567 |
return($weekdays); |
| 1568 |
} |
| 1569 |
|
| 1570 |
} // end class Date_calendar |
| 1571 |
|
| 1572 |
?> |
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