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<?php
/**
* TDateTimeStamp class file.
* @author Fabio Bas ctrlaltca[AT]gmail[DOT]com
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2012 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Id$
* @package System.Util
*/
/**
* TDateTimeStamp Class
*
* TDateTimeStamp Class is a wrapper to DateTime: http://php.net/manual/book.datetime.php
* Prado implemented this class before php started shipping the DateTime extension.
* This class is deprecated and left here only for compatibility for legacy code.
* Please note that this class doesn't support automatic conversion from gregorian to
* julian dates anymore.
*
* @author Fabio Bas ctrlaltca[AT]gmail[DOT]com
* @version $Id$
* @package System.Util
* @since 3.0.4
*/
class TDateTimeStamp
{
protected static $_month_normal = array("",31,28,31,30,31,30,31,31,30,31,30,31);
protected static $_month_leaf = array("",31,29,31,30,31,30,31,31,30,31,30,31);
/**
* Returns the day of the week (0=Sunday, 1=Monday, .. 6=Saturday)
* @param int year
* @param int month
* @param int day
*/
public function getDayofWeek($year, $month, $day)
{
$dt = new DateTime();
$dt->setDate($year, $month, $day);
return (int) $dt->format('w');
}
/**
* Checks for leap year, returns true if it is. No 2-digit year check. Also
* handles julian calendar correctly.
* @param float year to check
* @return boolean true if is leap year
*/
public function isLeapYear($year)
{
$year = $this->digitCheck($year);
$dt = new DateTime();
$dt->setDate($year, 1, 1);
return (bool) $dt->format('L');
}
/**
* Fix 2-digit years. Works for any century.
* Assumes that if 2-digit is more than 30 years in future, then previous century.
* @return integer change two digit year into multiple digits
*/
protected function digitCheck($y)
{
if ($y < 100){
$yr = (integer) date("Y");
$century = (integer) ($yr /100);
if ($yr%100 > 50) {
$c1 = $century + 1;
$c0 = $century;
} else {
$c1 = $century;
$c0 = $century - 1;
}
$c1 *= 100;
// if 2-digit year is less than 30 years in future, set it to this century
// otherwise if more than 30 years in future, then we set 2-digit year to the prev century.
if (($y + $c1) < $yr+30) $y = $y + $c1;
else $y = $y + $c0*100;
}
return $y;
}
public function get4DigitYear($y)
{
return $this->digitCheck($y);
}
/**
* @return integer get local time zone offset from GMT
*/
public function getGMTDiff($ts=false)
{
$dt = new DateTime();
if($ts)
$dt->setTimeStamp($ts);
else
$dt->setDate(1970, 1, 2);
return (int) $dt->format('Z');
}
/**
* @return array an array with date info.
*/
function parseDate($txt=false)
{
if ($txt === false) return getdate();
$dt = new DateTime($txt);
return array(
'seconds' => (int) $dt->format('s'),
'minutes' => (int) $dt->format('i'),
'hours' => (int) $dt->format('G'),
'mday' => (int) $dt->format('j'),
'wday' => (int) $dt->format('w'),
'mon' => (int) $dt->format('n'),
'year' => (int) $dt->format('Y'),
'yday' => (int) $dt->format('z'),
'weekday' => $dt->format('l'),
'month' => $dt->format('F'),
0 => (int) $dt->format('U'),
);
}
/**
* @return array an array with date info.
*/
function getDate($d=false,$fast=false)
{
if ($d === false) return getdate();
$dt = new DateTime();
$dt->setTimestamp($d);
return array(
'seconds' => (int) $dt->format('s'),
'minutes' => (int) $dt->format('i'),
'hours' => (int) $dt->format('G'),
'mday' => (int) $dt->format('j'),
'wday' => (int) $dt->format('w'),
'mon' => (int) $dt->format('n'),
'year' => (int) $dt->format('Y'),
'yday' => (int) $dt->format('z'),
'weekday' => $dt->format('l'),
'month' => $dt->format('F'),
0 => (int) $dt->format('U'),
);
}
/**
* @return boolean true if valid date, semantic check only.
*/
public function isValidDate($y,$m,$d)
{
if ($this->isLeapYear($y))
$marr =& self::$_month_leaf;
else
$marr =& self::$_month_normal;
if ($m > 12 || $m < 1) return false;
if ($d > 31 || $d < 1) return false;
if ($marr[$m] < $d) return false;
if ($y < 1000 && $y > 3000) return false;
return true;
}
/**
* @return string formatted date based on timestamp $d
*/
function formatDate($fmt,$ts=false,$is_gmt=false)
{
$dt = new DateTime();
if($is_gmt)
$dt->setTimeZone(new DateTimeZone('UTC'));
$dt->setTimestamp($ts);
return $dt->format($fmt);
}
/**
* @return integer|float a timestamp given a local time
*/
function getTimeStamp($hr,$min,$sec,$mon=false,$day=false,$year=false,$is_gmt=false)
{
$dt = new DateTime();
if($is_gmt)
$dt->setTimeZone(new DateTimeZone('UTC'));
$dt->setDate($year!==false ? $year : date('Y'),
$mon!==false ? $mon : date('m'),
$day!==false ? $day : date('d'));
$dt->setTime($hr, $min, $sec);
return (int) $dt->format('U');
}
}
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