bzwrite
<?php
// You need to replace this section in Function EgyptianCalendar
// As well as Function MayanTihkalCalendar
$revolutionsperyear = $ttl_num / $i;
$numyears = floor((ceil($roun) / $revolutionsperyear));
$avg_num_month = $ttl_num_months/$i;
$jtl = abs(abs($roun) - ceil($revolutionsperyear*($numyears+1)));
while($month==0){
$day=0;
$u=0;
foreach($monthusage as $key => $item){
$t=0;
foreach($item as $numdays){
$t++;
$tt=0;
for($sh=1;$sh<=$numdays;$sh++){
$ii=$ii+1;
$tt++;
if ($ii==floor($jtl)){
if ($roun<0){
$daynum = $tt;
$month = $t;
} else {
$daynum = $numdays-($tt-1);
$month = $avg_num_month-($t-1);
}
$sequence = $key;
$nodaycount=true;
}
}
if ($nodaycount==false)
$day++;
}
$u++;
}
}
?>
This section of code need to be changed in the calculation I noticed today in our RounCalendar we had a zero day this function will calculate the month and day correctly for the calendars, it is a pretty universe piece of code, I am sorry it wasn't properly tested and need some refactoring.
Funciones de calendario
Introducción
La extensión calendar pone a disposición una serie de funciones para simplificar la conversión entre los distintos formatos de calendario. El intermediario ó estándar en que se basa es la Cuenta de DÃas Juliana. La Cuenta de DÃas Juliana es una cuenta que comienza mucho antes que lo que mucha gente podrÃa necesitar contar (como alrededor del 4000 AC). Para convertir entre sistemas de calendario, primero deberá convertir a la Cuenta de DÃas Juliana y luego al sistema de su elección. ¡La Cuenta de DÃas es muy diferente del Calendario Juliano! Para más información sobre la Cuenta de DÃas Juliana visitar » http://www.hermetic.ch/cal_stud/jdn.htm. Para más información sobre sistemas de calendario, visitar » http://www.fourmilab.ch/documents/calendar/. En estas instrucciones se han incluÃdo extractos entrecomillados de dicha página.
Instalación
Para tener trabajando estas funciones, tiene que compilar PHP con --enable-calendar.
La versión para Windows de PHP tiene soporte nativo para esta extensión. No se necesita cargar ninguna extensión adicional para usar estas funciones.
Configuración en tiempo de ejecución
Esta extensión no tiene directivas de configuración en php.ini.
Tipos de recursos
Esta extensión no tiene ningún tipo de recurso definido.
Constantes predefinidas
Estas constantes están definidas por esta extensión y estarán disponibles solamente cuando la extensión ha sido o bien compilada dentro de PHP o grabada dinámicamente en tiempo de ejecución.
- CAL_GREGORIAN (entero)
- CAL_JULIAN (entero)
- CAL_JEWISH (entero)
- CAL_FRENCH (entero)
- CAL_NUM_CALS (entero)
- CAL_DOW_DAYNO (entero)
- CAL_DOW_SHORT (entero)
- CAL_DOW_LONG (entero)
- CAL_MONTH_GREGORIAN_SHORT (entero)
- CAL_MONTH_GREGORIAN_LONG (entero)
- CAL_MONTH_JULIAN_SHORT (entero)
- CAL_MONTH_JULIAN_LONG (entero)
- CAL_MONTH_JEWISH (entero)
- CAL_MONTH_FRENCH (entero)
Las siguientes constantes se pueden utilizar desde PHP 4.3.0 :
- CAL_EASTER_DEFAULT (entero)
- CAL_EASTER_ROMAN (entero)
- CAL_EASTER_ALWAYS_GREGORIAN (entero)
- CAL_EASTER_ALWAYS_JULIAN (entero)
Estas constantes están disponibles a partir de PHP 5.0.0 :
- CAL_JEWISH_ADD_ALAFIM_GERESH (entero)
- CAL_JEWISH_ADD_ALAFIM (entero)
- CAL_JEWISH_ADD_GERESHAYIM (entero)
Table of Contents
- cal_days_in_month — Devuelve el número de dias en un mes para un determinado año y calendario
- cal_from_jd — Convierte de Cuenta de DÃas Juliana a un calendario soportado.
- cal_info — Devuelve información sobre un calendario en particular.
- cal_to_jd — Convierte un calendario soportado a Cuenta de DÃas Juliana.
- easter_date — devuelve la marca de tiempo UNIX para la medianoche de Pascua de un año dado
- easter_days — Obtiene el número de dÃas tras el 21 de marzo en que cae la Pascua en un año dado
- FrenchToJD — Convierte del Calendario Republicano Francés a la Cuenta de DÃas Juliana
- GregorianToJD — Convierte de fecha Gregoriana a la Cuenta de DÃas Juliana
- JDDayOfWeek — Devuelve el dÃa de la semana
- JDMonthName — Devuelve el nombre de un mes
- JDToFrench — Convierte de Cuenta de DÃas al Calendario Republicano Francés
- JDToGregorian — Convierte de Cuenta de DÃas a fecha Gregoriana
- jdtojewish — Convierte de cuenta de dÃas juliana a calendario judÃo
- JDToJulian — Convierte de Cuenta de DÃas Juliana a Calendario Juliano
- jdtounix — Convierte un dia Juliano a UNIX timestamp
- JewishToJD — Convierte del Calendario JudÃo a la Cuenta de DÃas Juliana
- JulianToJD — Convierte de Calendario Juliano a Cuenta de DÃas Juliana
- unixtojd — Convierte de UNIX timestamp a dia Juliano
add a note
User Contributed NotesCalendario
simon at chronolabs dot org dot au
20-Nov-2007 10:20
20-Nov-2007 10:20
simon at chronolabs dot org dot au
09-Nov-2007 09:44
09-Nov-2007 09:44
This is the egyptian calendar which was the first 365 day calendar on the planet it has no leap year which makes it a little inaccurate but you can work on your own implementation of this code when you like, this is another implementation of the roun floating point code which is a universal code for generating date codec's you can make practically all calendars with this code the $pweight is based on my research on carbon date stamping etc of when egypt epoch or PPO was made, some people argue a few thousand years while other can date egypts epoch being around 30000 years ago!! This is on the basis of tidal marking on statues and momuments when the are was covered in water after construction from sea level rising.
<?php
print_r(EgyptCalendar(time(),0));
function EgyptianCalendar($unix_time, $gmt,
$poffset = '1970-02-26 7:45 PM',
$pweight = '-9777600.22222222223',
$defiency='nonedeficient',
$timeset= array("hours" => 24,
"minutes" => 60,
"seconds" => 60))
{
// Code Segment 1 – Calculate Floating Point
$tme = $unix_time;
if ($gmt>0){$gmt=-$gmt;} else {$gmt=abs($gmt);}
$ptime = strtotime($poffset)+(60*60*gmt);
$weight = $pweight+(1*gmt);
$egypt_xa = ($tme)/(24*60*60);
$egypt_ya = $ptime/(24*60*60);
$egypt = (($egypt_xa -$egypt_ya) -
$weight)+(microtime/999999);
// Code Segment 2 – Set month day arrays
$nonedeficient = array(
"seq1" => array(30,30,30,30,30,30,30,30,30,30,30,30,5));
$monthnames = array(
"seq1" => array('Thoth','Phaophi','Athyr','Choiak',
'Tybi', 'Mecheir','Phamenoth','Pharmuthi','Pachon',
'Payni','Epiphi','Mesore','epagomenai'));
$monthusage = isset($defiency) ? ${$defiency} : $deficient;
// Code Segment 3 – Calculate month number, day number
foreach($monthusage as $key => $item){
$i++;
foreach($item as $numdays){
$ttl_num=$ttl_num+$numdays;
$ttl_num_months++;
}
}
$revolutionsperyear = $ttl_num / $i;
$numyears = egyptd((floor($egypt) / $revolutionsperyear),0);
$avg_num_month = $ttl_num_months/$i;
$jtl = abs(abs($egypt) -
ceil($revolutionsperyear*($numyears+1)));
while($month==0){
$day=0;
$u=0;
foreach($monthusage as $key => $item){
$t=0;
foreach($item as $numdays){
$t++;
$tt=0;
for($sh=1;$sh<=$numdays;$sh++){
$ii=$ii+1;
$tt++;
if ($ii==floor($jtl)){
if ($egypt>0){
$daynum = $tt;
$month = $t;
} else {
$daynum = $numdays-$tt;
$month = $avg_num_month-$t;
}
$sequence = $key;
$nodaycount=true;
}
}
if ($nodaycount==false)
$day++;
}
$u++;
}
}
//$numyears = abs($numyears);
$timer = substr($egypt, strpos($egypt,'.')+1,
strlen($egypt)-strpos($egypt,'.')-1);
$egypt_out= $numyears.'/'.$month.'/'.$daynum.' '.$day.'.'.
floor(intval(substr($timer,0,2))/100*$timeset['hours']).':'.
floor(intval(substr($timer,2,2))/100*$timeset['minutes']).':'.
floor(intval(substr($timer,4,2))/100*$timeset['seconds']).'.'.
substr($timer,6,strlen($timer)-6);
$egypt_obj = array('year'=>$numyears,
'month'=>$month,
'mname' => $monthnames[$sequence][$month-1],
'day'=>$daynum,
'jtl'=>$jtl,
'day_count'=>$day,
'hours'=>floor(intval(substr($timer,0,2))/100
*$timeset['hours']),
'minute'=>floor(intval(substr($timer,2,2))/100
*$timeset['minutes']),
'seconds'=>floor(intval(substr($timer,4,2))/100
*$timeset['seconds']),
'microtime'=>substr($timer,6,strlen($timer)-6),
'strout'=>$egypt_out);
return $egypt_obj;
}
?>
btw in my previous post of the Mayan Tikal calendar the top part of the function was chopped off in my code cut and paste that is the line for the function which looks like, the top 3 line will need to be replace with:
<?php
print_r(MayanTikalCalendar(time(),0));
function MayanTikalCalendar($unix_time, $gmt,
?>
simon at chronolabs dot org dot au
08-Nov-2007 03:27
08-Nov-2007 03:27
Well this is the second part, well more the second calendar of Maya the Tikal there is two of them one for long count, one for general date seeding, this is using an implementation of floating point time (roun).
<?php
$maya = MayanTikalCalendar(time(),0);
print_r($maya);
$poffset = '2012-12-21 8:24 PM',
$pweight = '-1872000.22222222223',
$defiency='nonedeficient',
$timeset= array("hours" => 24,
"minutes" => 60,
"seconds" => 60))
{
// Code Segment 1 – Calculate Floating Point
$tme = $unix_time;
if ($gmt>0){ $gmt=-$gmt; } else { $gmt=abs($gmt); }
$ptime = strtotime($poffset)+(60*60*gmt);
$maya_xa = ($tme)/(24*60*60);
$maya_ya = $ptime/(24*60*60);
$maya = (($maya_xa -$maya_ya) - $pweight)+(microtime/999999);
// Code Segment 2 – Set month day arrays
$nonedeficient = array(
"seq1" => array(20,20,20,20,20,20,20,20,20,
20,20,20,20,20,20,20,20,20,5));
$monthnames = array("seq1" => array(
'Pop', 'Uo', 'Zip', 'Zot\'z', 'Tzec', 'Xul',
'Yaxkin', 'Mol', 'Ch\'en', 'Yax', 'Zac', 'Ceh',
'Mac', 'Kankin', 'Muan', 'Pax', 'Kayab',
'Cumku', 'Uayeb'));
$daynames = array("seq1" => array(
'Imix', 'Ik', 'Akbal', 'Kan', 'Chicchan',
'Cimi','Manik', 'Lamat', 'Muluc', 'Oc',
'Chuen', 'Eb', 'Ben', 'Ix', 'Men',
'Cib', 'Caban', 'Etz\'nab', 'Cauac', 'Ahau'));
$monthusage = isset($defiency) ? ${$defiency} : $deficient;
// Code Segment 3 – Calculate month number, day numbers etc
foreach($monthusage as $key => $item){
$i++;
foreach($item as $numdays){
$ttl_num=$ttl_num+$numdays;
$ttl_num_months++;
}
}
$revolutionsperyear = $ttl_num / $i;
$numyears = (round((floor($maya) / $revolutionsperyear),0));
$avg_num_month = $ttl_num_months/$i;
$jtl = abs(abs($maya) -
ceil($revolutionsperyear*($numyears+1)));
while($month==0){
$day=0;
$u=0;
foreach($monthusage as $key => $item){
$t=0;
foreach($item as $numdays){
$t++;
$tt=0;
for($sh=1;$sh<=$numdays;$sh++){
$ii=$ii+1;
$tt++;
if ($ii==floor($jtl)){
if ($maya>0){
$daynum = $tt;
$month = $t;
} else {
$daynum = $numdays-$tt;
$month = $avg_num_month-$t;
}
$sequence = $key;
$nodaycount=true;
}
}
if ($nodaycount==false)
$day++;
}
$u++;
}
}
$timer = substr($maya, strpos($maya,'.')+1,
strlen($maya)-strpos($maya,'.')-1);
$maya_out= $numyears.'/'.$month.'/'.$daynum.' '.$day.'.'.
floor(intval(substr($timer,0,2))/100*$timeset['hours']).':'.
floor(intval(substr($timer,2,2))/100*$timeset['minutes']).':'.
floor(intval(substr($timer,4,2))/100*$timeset['seconds']).'.'.
substr($timer,6,strlen($timer)-6);
$maya_obj = array(
'longcount'=>MayanLongCount($tme),'year'=>abs($numyears),
'month'=>$month, 'mname' => $monthnames[$sequence][$month-1],
'day'=>$daynum, 'dayname'=>$daynames[$sequence][$daynum-1],
'day'=>$daynum, 'jtl'=>$jtl, 'day_count'=>$day,
'hours'=> floor(intval(substr($timer,0,2))/100
*$timeset['hours']),
'minute'=> floor(intval(substr($timer,2,2))/100
*$timeset['minutes']),
'seconds'=>floor(intval(substr($timer,4,2))/100
*$timeset['seconds']),
'microtime'=>substr($timer,6,strlen($timer)-6),
'strout'=>$maya_out);
return $maya_obj;
}
?>
simon at chronolabs dot org dot au
08-Nov-2007 08:00
08-Nov-2007 08:00
This will return the mayan long count calendar which cycle reaches 13.0.0.0.0 in 2012, I have had to compress the changemaya function for this code library so if you want to space it out your more than welcome. It works with unix time. To call the routine use the following syntax. The mayan calendar is a day count that is around 5000 years old, it tracks our cestial position in the galaxy
<?php
echo MayanLongCount(time());
function MayanLongCount($tme){
$config = array('ppo' => array(13,0,0,0,0),
'epoch' => strtotime('2012-12-21'));
$diff=(($tme-$config['epoch'])/(60*60*24));
$ppo = changemaya($config['ppo'],ceil($diff));
return $ppo[0].'.'.$ppo[1].'.'.$ppo[2].'.'.$ppo[3].'.'.$ppo[4];
}
function changemaya($ppo,$diff){
if ($diff>0) { $amount=1; } else { $amount=-1; }
for ($sh=1;$sh<abs($diff);$sh++){ if ($ppo[4]+$amount>20){
if ($ppo[3]+$amount>20){ if ($ppo[2]+$amount>20){
if ($ppo[1]+$amount>20){ if ($ppo[0]+$amount>20){
$ppo[0]=0; $ppo[1]=0; $ppo[2]=0; $ppo[3]=0; $ppo[4]=0;
} else { $ppo[1]=0; $ppo[0]=$ppo[0]+$amount;}
} else { $ppo[2]=0; $ppo[1]=$ppo[1]+$amount; }
} else {$ppo[3]=0; $ppo[2]=$ppo[2]+$amount; }
} else { $ppo[4]=0; $ppo[3]=$ppo[3]+$amount; }
} elseif ($ppo[4]+$amount<0){ if ($ppo[3]+$amount<0){
if ($ppo[2]+$amount<0){ if ($ppo[1]+$amount<0){
if ($ppo[0]+$amount<0){ $ppo[0]=20; $ppo[1]=0;
$ppo[2]=0; $ppo[3]=0; $ppo[4]=0;
} else { $ppo[1]=20; $ppo[0]=$ppo[0]+$amount; }
} else { $ppo[2]=20; $ppo[1]=$ppo[1]+$amount; }
} else { $ppo[3]=20; $ppo[2]=$ppo[2]+$amount; }
} else { $ppo[4]=20; $ppo[3]=$ppo[3]+$amount; }
} else { $ppo[4]=$ppo[4]+$amount;}}
return $ppo;
}
?>
Thanks!!
Martin Lindhe
27-Sep-2007 02:08
27-Sep-2007 02:08
To calculate NTP timestamp from unix timestamp:
<?
function ntptime()
{
return 2208988800 + time();
}
?>
NTP timestamps are represented as a 64-bit unsigned fixed-
point number, in seconds relative to 0h on 1 January 1900.
schotm29 at hotmail dot com
07-Sep-2007 04:00
07-Sep-2007 04:00
fRay Fergusons light reimplimentation doesn't work all of the time, because of the inaccuracy in the calculations (it is quite accurate but not accurate enough for a live web app)
david dot scourfield at llynfi dot co dot uk
17-Aug-2007 01:13
17-Aug-2007 01:13
I created this function a while ago and needed it again recently, so had to trawl through some old files to find it. Thought I'd post it here in case anyone else finds it useful.
<?php
/*
* Function to calculate which days are British bank holidays (England & Wales) for a given year.
*
* Created by David Scourfield, 07 August 2006, and released into the public domain.
* Anybody may use and/or modify this code.
*
* USAGE:
*
* array calculateBankHolidays(int $yr)
*
* ARGUMENTS
*
* $yr = 4 digit numeric representation of the year (eg 1997).
*
* RETURN VALUE
*
* Returns an array of strings where each string is a date of a bank holiday in the format "yyyy-mm-dd".
*
* See example below
*
*/
function calculateBankHolidays($yr) {
$bankHols = Array();
// New year's:
switch ( date("w", strtotime("$yr-01-01 12:00:00")) ) {
case 6:
$bankHols[] = "$yr-01-03";
break;
case 0:
$bankHols[] = "$yr-01-02";
break;
default:
$bankHols[] = "$yr-01-01";
}
// Good friday:
$bankHols[] = date("Y-m-d", strtotime( "+".(easter_days($yr) - 2)." days", strtotime("$yr-03-21 12:00:00") ));
// Easter Monday:
$bankHols[] = date("Y-m-d", strtotime( "+".(easter_days($yr) + 1)." days", strtotime("$yr-03-21 12:00:00") ));
// May Day:
if ($yr == 1995) {
$bankHols[] = "1995-05-08"; // VE day 50th anniversary year exception
} else {
switch (date("w", strtotime("$yr-05-01 12:00:00"))) {
case 0:
$bankHols[] = "$yr-05-02";
break;
case 1:
$bankHols[] = "$yr-05-01";
break;
case 2:
$bankHols[] = "$yr-05-07";
break;
case 3:
$bankHols[] = "$yr-05-06";
break;
case 4:
$bankHols[] = "$yr-05-05";
break;
case 5:
$bankHols[] = "$yr-05-04";
break;
case 6:
$bankHols[] = "$yr-05-03";
break;
}
}
// Whitsun:
if ($yr == 2002) { // exception year
$bankHols[] = "2002-06-03";
$bankHols[] = "2002-06-04";
} else {
switch (date("w", strtotime("$yr-05-31 12:00:00"))) {
case 0:
$bankHols[] = "$yr-05-25";
break;
case 1:
$bankHols[] = "$yr-05-31";
break;
case 2:
$bankHols[] = "$yr-05-30";
break;
case 3:
$bankHols[] = "$yr-05-29";
break;
case 4:
$bankHols[] = "$yr-05-28";
break;
case 5:
$bankHols[] = "$yr-05-27";
break;
case 6:
$bankHols[] = "$yr-05-26";
break;
}
}
// Summer Bank Holiday:
switch (date("w", strtotime("$yr-08-31 12:00:00"))) {
case 0:
$bankHols[] = "$yr-08-25";
break;
case 1:
$bankHols[] = "$yr-08-31";
break;
case 2:
$bankHols[] = "$yr-08-30";
break;
case 3:
$bankHols[] = "$yr-08-29";
break;
case 4:
$bankHols[] = "$yr-08-28";
break;
case 5:
$bankHols[] = "$yr-08-27";
break;
case 6:
$bankHols[] = "$yr-08-26";
break;
}
// Christmas:
switch ( date("w", strtotime("$yr-12-25 12:00:00")) ) {
case 5:
$bankHols[] = "$yr-12-25";
$bankHols[] = "$yr-12-28";
break;
case 6:
$bankHols[] = "$yr-12-27";
$bankHols[] = "$yr-12-28";
break;
case 0:
$bankHols[] = "$yr-12-26";
$bankHols[] = "$yr-12-27";
break;
default:
$bankHols[] = "$yr-12-25";
$bankHols[] = "$yr-12-26";
}
// Millenium eve
if ($yr == 1999) {
$bankHols[] = "1999-12-31";
}
return $bankHols;
}
/*
* EXAMPLE:
*
*/
header("Content-type: text/plain");
$bankHolsThisYear = calculateBankHolidays(2007);
print_r($bankHolsThisYear);
?>
Will output this result:
Array
(
[0] => 2007-01-01
[1] => 2007-04-06
[2] => 2007-04-09
[3] => 2007-05-07
[4] => 2007-05-28
[5] => 2007-08-27
[6] => 2007-12-25
[7] => 2007-12-26
)
fRay Ferguson
21-Apr-2006 05:32
21-Apr-2006 05:32
The following is a light reimplimentation of some of these functions wich can be used in an include file to work around the lack of --with-calendar in php implimentations.
<?php
/* IMPLEMENTS SUBSET OF PHP CALENDAR FUNCTIONS ON SYSTEMS COMPILED W/O --enable-calendar */
if (!function_exists('cal_days_in_month')){
function cal_days_in_month($a_null, $a_month, $a_year) {
return date('t', mktime(0, 0, 0, $a_month+1, 0, $a_year));
}
}
if (!function_exists('cal_to_jd')){
function cal_to_jd($a_null, $a_month, $a_day, $a_year){
if ( $a_month <= 2 ){
$a_month = $a_month + 12 ;
$a_year = $a_year - 1 ;
}
$A = intval($a_year/100);
$B = intval($A/4) ;
$C = 2-$A+$B ;
$E = intval(365.25*($a_year+4716)) ;
$F = intval(30.6001*($a_month+1));
return intval($C+$a_day+$E+$F-1524) ;
}
}
if (!function_exists('get_jd_dmy')) {
function get_jd_dmy($a_jd){
$W = intval(($a_jd - 1867216.25)/36524.25) ;
$X = intval($W/4) ;
$A = $a_jd+1+$W-$X ;
$B = $A+1524 ;
$C = intval(($B-122.1)/365.25) ;
$D = intval(365.25*$C) ;
$E = intval(($B-$D)/30.6001) ;
$F = intval(30.6001*$E) ;
$a_day = $B-$D-$F ;
if ( $E > 13 ) {
$a_month=$E-13 ;
$a_year = $C-4715 ;
} else {
$a_month=$E-1 ;
$a_year=$C-4716 ;
}
return array($a_month, $a_day, $a_year) ;
}
}
if (!function_exists('jdmonthname')) {
function jdmonthname($a_jd,$a_mode){
$tmp = get_jd_dmy($a_jd) ;
$a_time = "$tmp[0]/$tmp[1]/$tmp[2]" ;
switch($a_mode) {
case 0:
return strftime("%b",strtotime("$a_time")) ;
case 1:
return strftime("%B",strtotime("$a_time")) ;
}
}
}
if (!function_exists('jddayofweek')) {
function jddayofweek($a_jd,$a_mode){
$tmp = get_jd_dmy($a_jd) ;
$a_time = "$tmp[0]/$tmp[1]/$tmp[2]" ;
switch($a_mode) {
case 1:
return strftime("%A",strtotime("$a_time")) ;
case 2:
return strftime("%a",strtotime("$a_time")) ;
default:
return strftime("%w",strtotime("$a_time")) ;
}
}
}
?>
amichauer at gmx dot de
28-Jun-2005 07:46
28-Jun-2005 07:46
<?php
class HijriCalendar
{
function monthName($i) // $i = 1..12
{
static $month = array(
"Möxärräm", "Safar", "Rabig-äl-Äwwäl", "Rabig-äl-Axír",
"Cömäd-äl-Äwwäl", "Cömäd-äl-Axír", "Racäb", "Þäðbän",
"Ramazan", "Þäwäl", "Zö-äl-Qäðdä", "Zö-äl-Xiccä"
);
return $month[$i-1];
}
function GregorianToHijri($time = null)
{
if ($time === null) $time = time();
$m = date('m', $time);
$d = date('d', $time);
$y = date('Y', $time);
return HijriCalendar::JDToHijri(
cal_to_jd(CAL_GREGORIAN, $m, $d, $y));
}
function HijriToGregorian($m, $d, $y)
{
return jd_to_cal(CAL_GREGORIAN,
HijriCalendar::HijriToJD($m, $d, $y));
}
# Julian Day Count To Hijri
function JDToHijri($jd)
{
$jd = $jd - 1948440 + 10632;
$n = (int)(($jd - 1) / 10631);
$jd = $jd - 10631 * $n + 354;
$j = ((int)((10985 - $jd) / 5316)) *
((int)(50 * $jd / 17719)) +
((int)($jd / 5670)) *
((int)(43 * $jd / 15238));
$jd = $jd - ((int)((30 - $j) / 15)) *
((int)((17719 * $j) / 50)) -
((int)($j / 16)) *
((int)((15238 * $j) / 43)) + 29;
$m = (int)(24 * $jd / 709);
$d = $jd - (int)(709 * $m / 24);
$y = 30*$n + $j - 30;
return array($m, $d, $y);
}
# Hijri To Julian Day Count
function HijriToJD($m, $d, $y)
{
return (int)((11 * $y + 3) / 30) +
354 * $y + 30 * $m -
(int)(($m - 1) / 2) + $d + 1948440 - 385;
}
};
$hijri = HijriCalendar::GregorianToHijri( time() );
echo $hijri[1].'. '.HijriCalendar::monthName($hijri[0]).' '.$hijri[2];
?>
jthome at fcgov dot com
02-Oct-2003 09:38
02-Oct-2003 09:38
Had a similar problem as curlee, except I needed to create a JDE_ERP date. [format is CYYDDD]
<?php
function jde_date_create($month, $day, $year){
/*
* NOTE: $month and $day CANNOT have leading zeroes,
* $year must be'YYYY' format
*/
$jde_year_prefix = substr($year, 0, 1) - 1;
$jde_year_suffix = substr($year, -2);
//note that valid years for mktime are 1902-2037
$timestamp = mktime(0,0,0,$month, $day, $year);
$baseline_timestamp = mktime(0,0,0,1,0,$year);
$day_count = round(($timestamp - $baseline_timestamp)/86400);
$day_count_padded = str_pad($day_count,3,"0",STR_PAD_LEFT);
return ($jde_year_prefix . $jde_year_suffix . $day_count_padded);
}
echo jde_date_create(6,25,2000);// will return '103176'
?>
--
Jim
curlee at mindspring dot com
29-Aug-2003 06:55
29-Aug-2003 06:55
I solved a problem with Julian dates that are used in the JD Edwards ERP package (running on AS/400). The Julian format for this system is as follows: CYYDDD
Where C is 0 for 1900 and 1 for 2000
DDD is the day of the year count
I used the mktime built-in php function to convert dates to the normal DD/MM/YYYY format. This function will convert dates that are between 1970 and 2038 (limitation of unix timestamps and the mktime function)
The $jde_date var needs to be a 6 len STRING.... if you use a numeric var type it will drop the leading 0 for any date that represents 1900.... this will botch the substr functions and thus make the whole thing wrong.
function jde_date_conv($jde_date)
{
$ct = substr($jde_date,0,1);
$yr = substr($jde_date,1,2);
$dy = substr($jde_date,3,3);
if($ct == 0) $yr_pfx = 19;
if($ct == 1) $yr_pfx = 20;
$tlt_yr = $yr_pfx.$yr;
$base_time = mktime(0,0,0,1,0,$tlt_yr);
$unix_time = ($dy * 86400) + $base_time;
return date("m/d/Y" , $unix_time);
}
carlj at vibez dot ca
17-Jun-2003 10:28
17-Jun-2003 10:28
Why not do something like this, to find the number of days in a month?
$monthNum = date("n"); // or any value from 1-12
$year = date("Y"); // or any value >= 1
$numDays = date("t",mktime(0,0,0,$monthNum,1,$year))
This will tell you if there is 28-31 days in a month
dy64 at dy64 dot de
12-Nov-2002 04:18
12-Nov-2002 04:18
Best performance:
/*
* Find the number of days in a month
* Year is between 1 and 32767 inclusive
* Month is between 1 and 12 inclusive
*/
function DayInMonth($month, $year) {
var $daysInMonth = array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
if ($month != 2) return $daysInMonth[$month - 1];
return (checkdate($month, 29, $year)) ? 29 : 28;
}
kmcm at bigfoot dot com
21-Jan-2002 04:42
21-Jan-2002 04:42
if, like me, you don't have a PHP build that includes the cal functions, you may want to use this function for sorting out leap year.
function days_in_feb($year){
//$year must be YYYY
//[gregorian] leap year math :
if ($year < 0) $year++;
$year += 4800;
if ( ($year % 4) == 0) {
if (($year % 100) == 0) {
if (($year % 400) == 0) {
return(29);
} else {
return(28);
}
} else {
return(29);
}
} else {
return(28);
}
}
of course the next leap year isn't until the end of the century but this makes for timeless code I guess ...or if you are using 2000 in your dates or are going far back in time, etc, it is necessary.
mikebabcock at pobox dot com
17-Jul-2000 07:20
17-Jul-2000 07:20
There are two world calculations for the date of Easter. The Easter date function should account for this; one used (generally) by the Western world and one (generally) used by the Eastern (the official date used by the East Orthodox Church).