PHP 5.4.35 Released

Calendar Funkcje

Spis treści

  • cal_days_in_month — Return the number of days in a month for a given year and calendar
  • cal_from_jd — Converts from Julian Day Count to a supported calendar
  • cal_info — Returns information about a particular calendar
  • cal_to_jd — Converts from a supported calendar to Julian Day Count
  • easter_date — Get Unix timestamp for midnight on Easter of a given year
  • easter_days — Get number of days after March 21 on which Easter falls for a given year
  • FrenchToJD — Converts a date from the French Republican Calendar to a Julian Day Count
  • GregorianToJD — Converts a Gregorian date to Julian Day Count
  • JDDayOfWeek — Returns the day of the week
  • JDMonthName — Returns a month name
  • JDToFrench — Converts a Julian Day Count to the French Republican Calendar
  • JDToGregorian — Converts Julian Day Count to Gregorian date
  • jdtojewish — Converts a Julian day count to a Jewish calendar date
  • JDToJulian — Converts a Julian Day Count to a Julian Calendar Date
  • jdtounix — Convert Julian Day to Unix timestamp
  • JewishToJD — Converts a date in the Jewish Calendar to Julian Day Count
  • JulianToJD — Converts a Julian Calendar date to Julian Day Count
  • unixtojd — Convert Unix timestamp to Julian Day
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User Contributed Notes 9 notes

up
2
david dot scourfield at llynfi dot co dot uk
7 years ago
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
)
up
2
simon at chronolabs dot org dot au
7 years ago
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,
                                  
?>
up
1
simon at chronolabs dot org dot au
7 years ago
<?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.
up
0
amichauer at gmx dot de
9 years ago
<?php

class HijriCalendar
{
    function
monthName($i) // $i = 1..12
   
{
        static
$month  = array(
           
"Mxrrm", "Safar", "Rabig-l-wwl", "Rabig-l-Axr",
           
"Cmd-l-wwl", "Cmd-l-Axr", "Racb", "bn",
           
"Ramazan", "wl", "Z-l-Qd", "Z-l-Xicc"
       
);
        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];

?>
up
0
jthome at fcgov dot com
11 years ago
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
up
0
curlee at mindspring dot com
11 years ago
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. 

<?php
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);
}
?>
up
-1
simon at chronolabs dot org dot au
7 years ago
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;
}

?>
up
-2
schotm29 at hotmail dot com
7 years ago
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)
up
-1
simon at chronolabs dot org dot au
7 years ago
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!!
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