Diese Seite bei php.net
The PHP manual text and comments are covered by the Creative Commons Attribution 3.0 License © the PHP Documentation Group - Impressum - mail("TO:Reinhard Neidl",...)
(PHP 4, PHP 5)
jdtofrench — Konvertiert ein Julianisches Datum zum Kalender der Französischen Revolution
Konvertiert ein Julianisches Datum zum Kalender der Französischen Revolution
Ein Julianischer Tag als Integer
Ein Französisches Revolutionsdatum als String in der Form "Monat/Tag/Yahr"
If you want to convert a date later than September 22nd 1806, you could use this function. It's a bit crude and due to the fact the original function terminates in the middle of 1806, it uses 1805 as it's 'terminus post quem'.
<?php
function extended_jdtofrench ($juliandate) {
if ($juliandate > 2380945) {
// jdtofrench () only accepts dates until september 1806
$gregorian_date = jdtogregorian ($juliandate);
$temp = explode ('/', $gregorian_date);
$year = $temp[2];
$juliandate = gregoriantojd ($temp[0], $temp[1], 1805);
$republican_date = jdtofrench ($juliandate);
$republican_date = explode ('/', $republican_date);
$diff = $year - 1805;
$republican_date[2] = $republican_date[2] + $diff;
} else {
$republican_date = jdtofrench ($juliandate);
}
return $republican_date;
}
?>
Here is a small piece of code to obtain the string data for a correctly converted gregorian date:
<?php
$arDateFrench = gregorian2FrenchDateArray(11, 9, 1799) ;
echo $arDateFrench[1] . " " . $arDateFrench[0] . " " . $arDateFrench[2] ;
/* the output will be:
18 Brumaire VIII
*/
function gregorian2FrenchDateArray($m, $d, $y)
{
$julian_date = gregoriantojd($m, $d, $y);
$french = jdtofrench($julian_date);
if($french == "0/0/0")
return "" ;
$arD = split("/", $french) ;
// get the month name
$monthname = FrenchMonthNames($arD[0]) ;
/* convert the year number to roman digits (as most historians do and documents of the time did */
$stryear = decrom($arD[2]) ;
return array($monthname, $arD[1], $stryear ) ;
}
function FrenchMonthNames($mo)
{
/* The names have been invented by Fabre d'Églantine, a second or rather third rank poet
of primarily pastoral poems, with each name referring to the respective period in the agricultural year; e.g. "Vendémiaire" (approx. September) is derived from "vendange" ("harvest"), "Brumaire" (Ocotober/November) from "brume" ("fog") and so on ... */
$arMo = array("Vendémiaire",
"Brumaire",
"Frimaire",
"Nivôse",
"Pluviôse",
"Ventôse",
"Germinal",
"Floréal",
"Prairial",
"Messidor",
"Thermidor",
"Fructidor",
"Sansculottide") ;
if($mo < count($arMo)+1)
return $arMo[$mo-1] ;
}
function decrom($dec){
$digits=array(
1 => "I",
4 => "IV",
5 => "V",
9 => "IX",
10 => "X",
40 => "XL",
50 => "L",
90 => "XC",
100 => "C",
400 => "CD",
500 => "D",
900 => "CM",
1000 => "M"
);
krsort($digits);
$retval="";
foreach($digits as $key => $value){
while($dec>=$key){
$dec-=$key;
$retval.=$value;
}
}
return $retval;
}
?>
Very limited function:
(extract from source of 4.3.3)
These routines only convert dates in years 1 through 14 (Gregorian dates 22 September 1792 through 22 September 1806). This more than covers the period when the calendar was in use.
Pour les français :
Ces routines ne converitssent les dates que de l'an 1 à 14 (du 22 septembre 1792 au 22 septembre 1806). Cela couvre plus que la période pendant laquelle le calendrier à été utilisé.
Diese Seite bei php.net