| 1 |
<?php |
| 2 |
|
| 3 |
/** |
| 4 |
* Zap Calendar Date Helper Class |
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* |
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* @copyright Copyright (C) 2006 - 2016 by Dan Cogliano |
| 7 |
* @license GNU General Public License version 2 or later; see LICENSE.txt |
| 8 |
*/ |
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|
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// No direct access |
| 11 |
defined('_ZAPCAL') or die( 'Restricted access' ); |
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|
| 13 |
/** |
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* Helper class for various date functions |
| 15 |
*/ |
| 16 |
class ZDateHelper { |
| 17 |
|
| 18 |
/** |
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* Find the number of days in a month |
| 20 |
* |
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* @param int $month Month is between 1 and 12 inclusive |
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* |
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* @param int $year is between 1 and 32767 inclusive |
| 24 |
* |
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* @return int |
| 26 |
*/ |
| 27 |
static function DayInMonth($month, $year) { |
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$daysInMonth = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); |
| 29 |
if ($month != 2) return $daysInMonth[$month - 1]; |
| 30 |
return (checkdate($month, 29, $year)) ? 29 : 28; |
| 31 |
} |
| 32 |
|
| 33 |
/** |
| 34 |
* Is given date today? |
| 35 |
* |
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* @param int $date date in Unix timestamp format |
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* |
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* @param int $tzid PHP recognized timezone (default is UTC) |
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* |
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* @return bool |
| 41 |
*/ |
| 42 |
static function isToday($date, $tzid = "UTC") { |
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$dtz = new DateTimeZone($tzid); |
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$dt = new DateTime("now", $dtz); |
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$now = time() + $dtz->getOffset($dt); |
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return gmdate('Y-m-d', $date) == gmdate('Y-m-d', $now); |
| 47 |
} |
| 48 |
|
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/** |
| 50 |
* Is given date before today? |
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* |
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* @param int $date date in Unix timestamp format |
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* |
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* @param int $tzid PHP recognized timezone (default is UTC) |
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* |
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* @return bool |
| 57 |
*/ |
| 58 |
static function isBeforeToday($date, $tzid = "UTC"){ |
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$dtz = new DateTimeZone($tzid); |
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$dt = new DateTime("now", $dtz); |
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$now = time() + $dtz->getOffset($dt); |
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return mktime(0,0,0,date('m',$now),date('d',$now),date('Y',$now)) > |
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mktime(0,0,0,date('m',$date),date('d',$date),date('Y',$now)); |
| 64 |
} |
| 65 |
|
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/** |
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* Is given date after today? |
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* |
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* @param int $date date in Unix timestamp format |
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* |
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* @param int $tzid PHP recognized timezone (default is UTC) |
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* |
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* @return bool |
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*/ |
| 75 |
static function isAfterToday($date, $tzid = "UTC"){ |
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$dtz = new DateTimeZone($tzid); |
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$dt = new DateTime("now", $dtz); |
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$now = time() + $dtz->getOffset($dt); |
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return mktime(0,0,0,date('m',$now),date('d',$now),date('Y',$now)) < |
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mktime(0,0,0,date('m',$date),date('d',$date),date('Y',$now)); |
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} |
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|
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/** |
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* Is given date tomorrow? |
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* |
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* @param int $date date in Unix timestamp format |
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* |
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* @param int $tzid PHP recognized timezone (default is UTC) |
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* |
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* @return bool |
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*/ |
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static function isTomorrow($date, $tzid = "UTC") { |
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$dtz = new DateTimeZone($tzid); |
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$dt = new DateTime("now", $dtz); |
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$now = time() + $dtz->getOffset($dt); |
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return gmdate('Y-m-d', $date) == gmdate('Y-m-d', $now + 60 * 60 * 24); |
| 97 |
} |
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|
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/** |
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* Is given date in the future? |
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* |
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* This routine differs from isAfterToday() in that isFuture() will |
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* return true for date-time values later in the same day. |
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* |
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* @param int $date date in Unix timestamp format |
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* |
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* @param int $tzid PHP recognized timezone (default is UTC) |
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* |
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* @return bool |
| 110 |
*/ |
| 111 |
static function isFuture($date, $tzid = "UTC"){ |
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$dtz = new DateTimeZone($tzid); |
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$dt = new DateTime("now", $dtz); |
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$now = time() + $dtz->getOffset($dt); |
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return $date > $now; |
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} |
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|
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/** |
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* Is given date in the past? |
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* |
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* This routine differs from isBeforeToday() in that isPast() will |
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* return true for date-time values earlier in the same day. |
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* |
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* @param int $date date in Unix timestamp format |
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* |
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* @param int $tzid PHP recognized timezone (default is UTC) |
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* |
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* @return bool |
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*/ |
| 130 |
static function isPast($date, $tzid = "UTC") { |
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$dtz = new DateTimeZone($tzid); |
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$dt = new DateTime("now", $dtz); |
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$now = time() + $dtz->getOffset($dt); |
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return $date < $now; |
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} |
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|
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/** |
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* Return current Unix timestamp in local timezone |
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* |
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* @param string $tzid PHP recognized timezone |
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* |
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* @return int |
| 143 |
*/ |
| 144 |
static function now($tzid = "UTC"){ |
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$dtz = new DateTimeZone($tzid); |
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$dt = new DateTime("now", $dtz); |
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$now = time() + $dtz->getOffset($dt); |
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return $now; |
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} |
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|
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/** |
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* Is given date fall on a weekend? |
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* |
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* @param int $date Unix timestamp |
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* |
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* @return bool |
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*/ |
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static function isWeekend($date) { |
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$dow = gmdate('w',$date); |
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return $dow == 0 || $dow == 6; |
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} |
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|
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/** |
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* Format Unix timestamp to SQL date-time |
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* |
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* @param int $t Unix timestamp |
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* |
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* @return string |
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*/ |
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static function toSqlDateTime($t = 0) |
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{ |
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date_default_timezone_set('GMT'); |
| 173 |
if($t == 0) |
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return gmdate('Y-m-d H:i:s',self::now()); |
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return gmdate('Y-m-d H:i:s', $t); |
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} |
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|
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/** |
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* Format Unix timestamp to SQL date |
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* |
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* @param int $t Unix timestamp |
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* |
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* @return string |
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*/ |
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static function toSqlDate($t = 0) |
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{ |
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date_default_timezone_set('GMT'); |
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if($t == 0) |
| 189 |
return gmdate('Y-m-d',self::now()); |
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return gmdate('Y-m-d', $t); |
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} |
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|
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/** |
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* Format iCal date-time string to Unix timestamp |
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* |
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* @param string $datetime in iCal time format ( YYYYMMDD or YYYYMMDDTHHMMSS or YYYYMMDDTHHMMSSZ ) |
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* |
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* @return int Unix timestamp |
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*/ |
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static function fromiCaltoUnixDateTime($datetime) { |
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// first check format |
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$formats = array(); |
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$formats[] = "/[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]/"; |
| 204 |
$formats[] = "/[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]T[0-9][0-9][0-9][0-9][0-9][0-9]/"; |
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$formats[] = "/[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]T[0-9][0-9][0-9][0-9][0-9][0-9]Z/"; |
| 206 |
$ok = false; |
| 207 |
foreach($formats as $format){ |
| 208 |
if(preg_match($format,$datetime)){ |
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$ok = true; |
| 210 |
break; |
| 211 |
} |
| 212 |
} |
| 213 |
if(!$ok) |
| 214 |
return null; |
| 215 |
$year = substr($datetime,0,4); |
| 216 |
$month = substr($datetime,4,2); |
| 217 |
$day = substr($datetime,6,2); |
| 218 |
$hour = 0; |
| 219 |
$minute = 0; |
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$second = 0; |
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if(strlen($datetime) > 8 && $datetime[8] == "T") { //FixIn: 2.0.17.1 |
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$hour = substr($datetime,9,2); |
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$minute = substr($datetime,11,2); |
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$second = substr($datetime,13,2); |
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} |
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return gmmktime($hour, $minute, $second, $month, $day, $year); |
| 227 |
} |
| 228 |
|
| 229 |
/** |
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* Format Unix timestamp to iCal date-time string |
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* |
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* @param int $datetime Unix timestamp |
| 233 |
* |
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* @return string |
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*/ |
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static function fromUnixDateTimetoiCal($datetime){ |
| 237 |
date_default_timezone_set('GMT'); |
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return gmdate("Ymd\THis",$datetime); |
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} |
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|
| 241 |
/** |
| 242 |
* Convert iCal duration string to # of seconds |
| 243 |
* |
| 244 |
* @param string $duration iCal duration string |
| 245 |
* |
| 246 |
* return int |
| 247 |
*/ |
| 248 |
static function iCalDurationtoSeconds($duration) { |
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$secs = 0; |
| 250 |
if($duration[0] == "P") { //FixIn: 2.0.17.1 |
| 251 |
$duration = str_replace(array("H","M","S","T","D","W","P"),array("H,","M,","S,","","D,","W,",""),$duration); |
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$dur2 = explode(",",$duration); |
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foreach($dur2 as $dur){ |
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$val=intval($dur); |
| 255 |
if(strlen($dur) > 0){ |
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switch($dur[strlen($dur) - 1]) { //FixIn: 2.0.17.1 |
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case "H": |
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$secs += 60*60 * $val; |
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break; |
| 260 |
case "M": |
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$secs += 60 * $val; |
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break; |
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case "S": |
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$secs += $val; |
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break; |
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case "D": |
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$secs += 60*60*24 * $val; |
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break; |
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case "W": |
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$secs += 60*60*24*7 * $val; |
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break; |
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} |
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} |
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} |
| 275 |
} |
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return $secs; |
| 277 |
} |
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|
| 279 |
/** |
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* Check if day falls within date range |
| 281 |
* |
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* @param int $daystart start of day in Unix timestamp format |
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* |
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* @param int $begin Unix timestamp of starting date range |
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* |
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* @param int $end Unix timestamp of end date range |
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* |
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* @return bool |
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*/ |
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static function inDay($daystart, $begin, $end) |
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{ |
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//$dayend = $daystart + 60*60*24 - 60; |
| 293 |
// add 1 day to determine end of day |
| 294 |
// don't use 24 hours, since twice a year DST Sundays are 23 hours and 25 hours in length |
| 295 |
// adding 1 day takes this into account |
| 296 |
$dayend = self::addDate($daystart, 0,0,0,0,1,0); |
| 297 |
|
| 298 |
$end = max($begin, $end); // $end can't be less than $begin |
| 299 |
$inday = |
| 300 |
($daystart <= $begin && $begin < $dayend) |
| 301 |
||($daystart < $end && $end < $dayend) |
| 302 |
||($begin <= $daystart && $end > $dayend) |
| 303 |
; |
| 304 |
return $inday; |
| 305 |
} |
| 306 |
|
| 307 |
/** |
| 308 |
* Convert SQL date or date-time to Unix timestamp |
| 309 |
* |
| 310 |
* @param string $datetime SQL date or date-time |
| 311 |
* |
| 312 |
* @return int Unix date-time timestamp |
| 313 |
*/ |
| 314 |
static function toUnixDate($datetime) |
| 315 |
{ |
| 316 |
$year = substr($datetime,0,4); |
| 317 |
$month = substr($datetime,5,2); |
| 318 |
$day = substr($datetime,8,2); |
| 319 |
|
| 320 |
return mktime(0, 0, 0, $month, $day, $year); |
| 321 |
} |
| 322 |
|
| 323 |
/** |
| 324 |
* Convert SQL date or date-time to Unix date timestamp |
| 325 |
* |
| 326 |
* @param string $datetime SQL date or date-time |
| 327 |
* |
| 328 |
* @return int Unix timestamp |
| 329 |
*/ |
| 330 |
static function toUnixDateTime($datetime) |
| 331 |
{ |
| 332 |
// convert to absolute dates if neccessary |
| 333 |
$datetime = self::getAbsDate($datetime); |
| 334 |
$year = substr($datetime,0,4); |
| 335 |
$month = substr($datetime,5,2); |
| 336 |
$day = substr($datetime,8,2); |
| 337 |
$hour = 0; |
| 338 |
$minute = 0; |
| 339 |
$second = 0; |
| 340 |
if(strlen($datetime) > 10) { |
| 341 |
$hour = substr($datetime,11,2); |
| 342 |
$minute = substr($datetime,14,2); |
| 343 |
$second = substr($datetime,17,2); |
| 344 |
} |
| 345 |
return gmmktime($hour, $minute, $second, $month, $day, $year); |
| 346 |
} |
| 347 |
|
| 348 |
/** |
| 349 |
* Date math: add or substract from current date to get a new date |
| 350 |
* |
| 351 |
* @param int $date date to add or subtract from |
| 352 |
* |
| 353 |
* @param int $hour add or subtract hours from date |
| 354 |
* |
| 355 |
* @param int $min add or subtract minutes from date |
| 356 |
* |
| 357 |
* @param int $sec add or subtract seconds from date |
| 358 |
* |
| 359 |
* @param int $month add or subtract months from date |
| 360 |
* |
| 361 |
* @param int $day add or subtract days from date |
| 362 |
* |
| 363 |
* @param int $year add or subtract years from date |
| 364 |
* |
| 365 |
* @param string $tzid PHP recognized timezone (default is UTC) |
| 366 |
*/ |
| 367 |
static function addDate($date, $hour, $min, $sec, $month, $day, $year, $tzid = "UTC") { |
| 368 |
date_default_timezone_set($tzid); |
| 369 |
$sqldate = self::toSQLDateTime($date); |
| 370 |
$tdate = array(); |
| 371 |
$tdate["year"] = substr($sqldate,0,4); |
| 372 |
$tdate["mon"] = substr($sqldate,5,2); |
| 373 |
$tdate["mday"] = substr($sqldate,8,2); |
| 374 |
$tdate["hours"] = substr($sqldate,11,2); |
| 375 |
$tdate["minutes"] = substr($sqldate,14,2); |
| 376 |
$tdate["seconds"] = substr($sqldate,17,2); |
| 377 |
$newdate=mktime($tdate["hours"] + $hour, $tdate["minutes"] + $min, $tdate["seconds"] + $sec, $tdate["mon"] + $month, $tdate["mday"] + $day, $tdate["year"] + $year); |
| 378 |
date_default_timezone_set("UTC"); |
| 379 |
//echo self::toSQLDateTime($date) . " => " . self::toSQLDateTime($newdate) . " ($hour:$min:$sec $month/$day/$year)<br/>\n"; |
| 380 |
return $newdate; |
| 381 |
} |
| 382 |
|
| 383 |
/** |
| 384 |
* Date math: get date from week and day in specifiec month |
| 385 |
* |
| 386 |
* This routine finds actual dates for the second Tuesday of the month, last Friday of the month, etc. |
| 387 |
* For second Tuesday, use $week = 1, $wday = 2 |
| 388 |
* for last Friday, use $week = -1, $wday = 5 |
| 389 |
* |
| 390 |
* @param int $date Unix timestamp |
| 391 |
* |
| 392 |
* @param int $week week number, 0 is first week, -1 is last |
| 393 |
* |
| 394 |
* @param int $wday day of week, 0 is Sunday, 6 is Saturday |
| 395 |
* |
| 396 |
* @param string $tzid PHP supported timezone |
| 397 |
* |
| 398 |
* @return int Unix timestamp |
| 399 |
*/ |
| 400 |
static function getDateFromDay($date, $week, $wday,$tzid="UTC") { |
| 401 |
//echo "getDateFromDay(" . self::toSqlDateTime($date) . ",$week,$wday)<br/>\n"; |
| 402 |
// determine first day in month |
| 403 |
$tdate = getdate($date); |
| 404 |
$monthbegin = gmmktime(0,0,0, $tdate["mon"],1,$tdate["year"]); |
| 405 |
$monthend = self::addDate($monthbegin, 0,0,0,1,-1,0,$tzid); // add 1 month and subtract 1 day |
| 406 |
$day = self::addDate($date,0,0,0,0,1 - $tdate["mday"],0,$tzid); |
| 407 |
$month = array(array()); |
| 408 |
while($day <= $monthend) { |
| 409 |
$tdate=getdate($day); |
| 410 |
$month[$tdate["wday"]][]=$day; |
| 411 |
//echo self::toSQLDateTime($day) . "<br/>\n"; |
| 412 |
$day = self::addDate($day, 0,0,0,0,1,0,$tzid); // add 1 day |
| 413 |
} |
| 414 |
$dayinmonth=0; |
| 415 |
if($week >= 0) |
| 416 |
$dayinmonth = $month[$wday][$week]; |
| 417 |
else |
| 418 |
$dayinmonth = $month[$wday][count($month[$wday]) - 1]; |
| 419 |
//echo "return " . self::toSQLDateTime($dayinmonth); |
| 420 |
//exit; |
| 421 |
return $dayinmonth; |
| 422 |
} |
| 423 |
|
| 424 |
/** |
| 425 |
* Convert UTC date-time to local date-time |
| 426 |
* |
| 427 |
* @param string $sqldate SQL date-time string |
| 428 |
* |
| 429 |
* @param string $tzid PHP recognized timezone (default is "UTC") |
| 430 |
* |
| 431 |
* @return string SQL date-time string |
| 432 |
*/ |
| 433 |
static function toLocalDateTime($sqldate, $tzid = "UTC" ){ |
| 434 |
try |
| 435 |
{ |
| 436 |
$timezone = new DateTimeZone($tzid); |
| 437 |
} |
| 438 |
catch(Exception $e) |
| 439 |
{ |
| 440 |
// bad time zone specified |
| 441 |
return $sqldate; |
| 442 |
} |
| 443 |
$udate = self::toUnixDateTime($sqldate); |
| 444 |
$daydatetime = new DateTime("@" . $udate); |
| 445 |
$tzoffset = $timezone->getOffset($daydatetime); |
| 446 |
return self::toSqlDateTime($udate + $tzoffset); |
| 447 |
} |
| 448 |
|
| 449 |
/** |
| 450 |
* Convert local date-time to UTC date-time |
| 451 |
* |
| 452 |
* @param string $sqldate SQL date-time string |
| 453 |
* |
| 454 |
* @param string $tzid PHP recognized timezone (default is "UTC") |
| 455 |
* |
| 456 |
* @return string SQL date-time string |
| 457 |
*/ |
| 458 |
static function toUTCDateTime($sqldate, $tzid = "UTC" ){ |
| 459 |
|
| 460 |
date_default_timezone_set("UTC"); |
| 461 |
try |
| 462 |
{ |
| 463 |
$date = new DateTime($sqldate, $tzid); |
| 464 |
} |
| 465 |
catch(Exception $e) |
| 466 |
{ |
| 467 |
// bad time zone specified |
| 468 |
return $sqldate; |
| 469 |
} |
| 470 |
$offset = $date->getOffsetFromGMT(); |
| 471 |
if($offset >= 0) |
| 472 |
$date->sub(new DateInterval("PT".$offset."S")); |
| 473 |
else |
| 474 |
$date->add(new DateInterval("PT".abs($offset)."S")); |
| 475 |
return $date->toSql(true); |
| 476 |
} |
| 477 |
|
| 478 |
/** |
| 479 |
* Convert from a relative date to an absolute date |
| 480 |
* |
| 481 |
* Examples of relative dates are "-2y" for 2 years ago, "18m" |
| 482 |
* for 18 months after today. Relative date uses "y", "m" and "d" for |
| 483 |
* year, month and day. Relative date can be combined into comma |
| 484 |
* separated list, i.e., "-1y,-1d" for 1 year and 1 day ago. |
| 485 |
* |
| 486 |
* @param string $date relative date string (i.e. "1y" for 1 year from today) |
| 487 |
* |
| 488 |
* @param string $rdate reference date, or blank for current date (in SQL date-time format) |
| 489 |
* |
| 490 |
* @return string in SQL date-time format |
| 491 |
*/ |
| 492 |
static function getAbsDate($date,$rdate = ""){ |
| 493 |
if(str_replace(array("y","m","d","h","n"),"",strtolower($date)) != strtolower($date)){ |
| 494 |
date_default_timezone_set("UTC"); |
| 495 |
if($rdate == "") |
| 496 |
$udate = time(); |
| 497 |
else |
| 498 |
$udate = self::toUnixDateTime($rdate); |
| 499 |
$values=explode(",",strtolower($date)); |
| 500 |
$y = 0; |
| 501 |
$m = 0; |
| 502 |
$d = 0; |
| 503 |
$h = 0; |
| 504 |
$n = 0; |
| 505 |
foreach($values as $value){ |
| 506 |
$rtype = substr($value,strlen($value)-1); |
| 507 |
$rvalue = intval(substr($value,0,strlen($value) - 1)); |
| 508 |
switch($rtype){ |
| 509 |
case 'y': |
| 510 |
$y = $rvalue; |
| 511 |
break; |
| 512 |
case 'm': |
| 513 |
$m = $rvalue; |
| 514 |
break; |
| 515 |
case 'd': |
| 516 |
$d = $rvalue; |
| 517 |
break; |
| 518 |
case 'h': |
| 519 |
$h = $rvalue; |
| 520 |
break; |
| 521 |
case 'n': |
| 522 |
$n = $rvalue; |
| 523 |
break; |
| 524 |
} |
| 525 |
// for "-" values, move to start of day , otherwise, move to end of day |
| 526 |
if($rvalue[0] == '-') |
| 527 |
$udate = mktime(0,0,0,date('m',$udate),date('d',$udate),date('Y',$udate)); |
| 528 |
else |
| 529 |
$udate = mktime(0,-1,0,date('m',$udate),date('d',$udate)+1,date('Y',$udate)); |
| 530 |
$udate = self::addDate($udate,$h,$n,0,$m,$d,$y); |
| 531 |
} |
| 532 |
$date = self::toSqlDateTime($udate); |
| 533 |
} |
| 534 |
return $date; |
| 535 |
} |
| 536 |
|
| 537 |
/** |
| 538 |
* Format Unix timestamp to iCal date-time format |
| 539 |
* |
| 540 |
* @param int $datetime Unix timestamp |
| 541 |
* |
| 542 |
* @return string iCal date-time string |
| 543 |
*/ |
| 544 |
static function toiCalDateTime($datetime = null){ |
| 545 |
date_default_timezone_set('UTC'); |
| 546 |
if($datetime == null) |
| 547 |
$datetime = time(); |
| 548 |
return gmdate("Ymd\THis",$datetime); |
| 549 |
} |
| 550 |
|
| 551 |
/** |
| 552 |
* Format Unix timestamp to iCal date format |
| 553 |
* |
| 554 |
* @param int $datetime Unix timestamp |
| 555 |
* |
| 556 |
* @return string iCal date-time string |
| 557 |
*/ |
| 558 |
static function toiCalDate($datetime = null){ |
| 559 |
date_default_timezone_set('UTC'); |
| 560 |
if($datetime == null) |
| 561 |
$datetime = time(); |
| 562 |
return gmdate("Ymd",$datetime); |
| 563 |
} |
| 564 |
} |
| 565 |
|
