/**************************************************************************
*
* Class: Class 'Date' (class_date.inc.php)
*
* Version: 1.1
*
* Copyright: (c) 2010 Volker Rubach - All rights reserved
*
* Description: This class contains functions, to convert dates between
* German format and ISO 9075 standard (MySQL format), and
* some other functions for the evaluation of a date or to
* format a date in different versions.
*
*************************************************************************/
Include class
-------------
<code>
include( '../ <path> /class_date.inc.php' );
</code>
Create instance
---------------
<code>
$date = new Date();
</code>
Error handling
----------------
trigger_error( 'FUNCTION <name>: '<message>', E_USER_NOTICE );
trigger_error( 'FUNCTION <name>: '<message>', E_USER_WARNING );
trigger_error( 'FUNCTION <name>: '<message>', E_USER_ERROR );
Overview
--------
createTimestamp Create timestamp (MySQL format)
tsDateIso Get ISO date from timestamp
tsDateGer Get GER date from Timestamp
curDateIso Get current date in ISO format
curDateGer Get current date in GER format
curTimeLong Get current time (long)
curTimeShort Get current time (short)
daysInMonth Get days in month
getWeek Get current week
getWeekday Get current weekday
getDayName Get day name (eng or ger / long or short)
getMonName Get month name (eng or ger / long or short)
splitDate Splitting date in components
checkDate Checking date (numbers, correct date)
dateInCurMonth Checking if date is in current month
dateInCurYear Checking if date is in current year
compDate Comparing date with current date
isWeekday Checking if particular weekday
iso2ger Change Date Format From ISO To GER
ger2iso Change Date Format From GER To ISO
dateWD Date with weekday (eng or ger / long or short)
dateMN Date with month name (eng or ger / long or short)
dateSWDLM Date with short weekday and long month name
calcAge Calculate age
prevDay Calculate the previous day
nextDay Calculate the next day
prevMonth Calculate the previous month
nextMonth Calculate the next month
addDatePart Add a predefined value to a part of date
subDatePart Subtract a predefined value from a part of date
createTimestamp -> Create timestamp (MySQL format)
--------------------------------------------------
@input Nothing
@return Timestamp (yyyy-mm-dd hh:mm:ss)
<code>
$<var name> = $date->createTimestamp();
</code>
tsDateIso -> Get ISO date from timestamp
----------------------------------------
@input Timestamp (yyyy-mm-dd hh:mm:ss)
@return ISO Date (yyyy-mm-dd)
<code>
$<var name> = $date->tsDateIso($<var name>);
</code>
tsDateGer -> Get GER date from timestamp
----------------------------------------
@input Timestamp (yyyy-mm-dd hh:mm:ss)
@return GER Date (dd.mm.yyyy)
<code>
$<var name> = $date->tsDateGer($<var name>);
</code>
curDateIso -> Get current date in ISO format
--------------------------------------------
@input Nothing
@return ISO Date (yyyy-mm-dd)
<code>
$<var name> = $date->curDateIso();
</code>
curDateGer -> Get current date in GER format
--------------------------------------------
@input Nothing
@return GER Date (dd-mm-yyyy)
<code>
$<var name> = $date->curDateGer();
</code>
curTimeLong -> Get current time (long)
--------------------------------------
@input Nothing
@return Long Time (hh:mm:ss)
<code>
$<var name> = $date->curTimeLong();
</code>
curTimeShort -> Get current time (short)
----------------------------------------
@input Nothing
@return Short Time (hh:mm)
<code>
$<var name> = $date->curTimeShort();
</code>
daysInMonth -> Get days in month
--------------------------------
@input Nothing
@return Days (number)
<code>
$<var name> = $date->daysInMonth(>);
</code>
getWeek -> Get days in month
--------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Week (number)
<code>
$<var name> = $date->getWeek($<var name>);
</code>
getWeekday -> Get weekday
-------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Weekday (number)
WkDays: 0 = Sunday
1 = Monday
2 = Tuesday
3 = Wednesday
4 = Thursday
5 = Friday
6 = Saturday
<code>
$<var name> = $date->getWeekday($<var name>);
</code>
getDayName -> Get day name
--------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Day name (eng or ger / long or short)
Lang.: 'e' = english day name
'g' = german day name
Length: 'l' = long day name
's' = short day name
<code>
$<var name> = $date->getDayName($<var name>, <language>, <length>);
</code>
getMonName -> Get month name
----------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Month name (eng or ger / long or short)
Lang.: 'e' = english day name
'g' = german day name
Length: 'l' = long day name
's' = short day name
<code>
$<var name> = $date->getMonName($<var name>, <language>, <length>);
</code>
splitDate -> Splitting date in components
-----------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Array with Day (dd), Month (mm) and Year(yyyy)
<code>
$dateArr = $date->splitDate($<var name>);
</code>
Array: $dateArr[0] = Day
$dateArr[1] = Month
$dateArr[2] = Year
checkDate -> Checking date (correct input and correct date)
-----------------------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return True or False
<code>
if ($date->checkDate($<var name>))
{ ... } ;
else
{ ... } ;
</code>
dateInCurMonth -> Checking if date is in current month
------------------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return True or False
<code>
if ($date->dateInCurMonth($<var name>))
{ ... } ;
else
{ ... } ;
</code>
dateInCurYear -> Checking if date is in current year
----------------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return True or False
<code>
if ($date->dateInCurYear($<var name>))
{ ... } ;
else
{ ... } ;
</code>
compDate -> Comparing date with current date
--------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return True or False
<code>
if ($date->compDate($<var name>))
{ ... } ;
else
{ ... } ;
</code>
isWeekday -> Checking if particular weekday
-------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return True or False
WkDays: 0 = Sunday
1 = Monday
2 = Tuesday
3 = Wednesday
4 = Thursday
5 = Friday
6 = Saturday
<code>
if ($date->isWeekday($<var name>, <weekday number>))
{ ... } ;
else
{ ... } ;
</code>
iso2ger -> Change date format from ISO to GER
---------------------------------------------
@input ISO date (yyyy-mm-dd)
@return GER date (dd.mm.yyyy)
<code>
$<var name> = $date->iso2ger($<var name>);
</code>
ger2iso -> Change date format from GER to ISO
---------------------------------------------
@input GER date (dd.mm.yyyy)
@return ISO date (yyyy-mm-dd)
<code>
$<var name> = $date->ger2iso($<var name>);
</code>
dateWD -> Date with weekday
---------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Date (DDD dd.mm.yyyy or DDDDD dd.mm.yyyy)
Lang.: 'e' = english day name
'g' = german day name
Length: 'l' = long day name
's' = short day name
<code>
$<var name> = $date->dateWD($<var name>, <language>, <length>);
</code>
dateMN -> Date with month name
------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Date (dd. MMM yyyy or dd. MMMMM yyyy)
Lang.: 'e' = english day name
'g' = german day name
Length: 'l' = long day name
's' = short day name
<code>
$<var name> = $date->dateMN($<var name>, <language>, <length>);
</code>
dateSWDLM -> Date with short weekday and long month name
--------------------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Date (DDD dd. MMMMM yyyy)
Lang.: 'e' = english day name
'g' = german day name
<code>
$<var name> = $date->dateSWDLM($<var name>, <language>);
</code>
calcAge -> Calculate age
------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return Age (number)
<code>
$<var name> = $date->calcAge($<var name>);
</code>
prevDay -> Calculate the previous day
-------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
<code>
$<var name> = $date->prevDay($<var name>);
</code>
nextDay -> Calculate the next day
---------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
<code>
$<var name> = $date->nextDay($<var name>);
</code>
prevMonth -> Calculate the previous month
-----------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
<code>
$<var name> = $date->prevMonth($<var name>);
</code>
nextMonth -> Calculate the next month
-------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
<code>
$<var name> = $date->nextMonth($<var name>);
</code>
addDatePart -> Add a predefined value to a part of date
-------------------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
Part: d = add value at day
m = add value at month
y = add value at year
<code>
$<var name> = $date->addDatePart($<var name>, <part>, <value>);
</code>
subDatePart -> Subtract a predefined value from a part of date
--------------------------------------------------------------
@input ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
@return ISO date (yyyy-mm-dd) / GER date (dd.mm.yyyy)
Part: d = add value at day
m = add value at month
y = add value at year
<code>
$<var name> = $date->subDatePart($<var name>, <part>, <value>);
</code>
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