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    jdtofrench

    (PHP 4, PHP 5, PHP 7, PHP 8)

    jdtofrench — Convierte una Fecha Juliana al Calendario Republicano Francés

    Descripción

    jdtofrench(int $juliandaycount): string

    Convierte una Fecha Juliana al Calendario Republicano Francés.

    Parámetros

    julianday

    Una número de día juliano como un entero

    Valores devueltos

    La fecha de la Revolución Francesa como una cadena de la forma "mes/día/año"

    Ver también

    • frenchtojd() - Convierte una fecha del Calendario Republicano Francés a una fecha Juliana
    • cal_from_jd() - Convierte de una Fecha Juliana a un calendario soportado

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    User Contributed Notes 4 notes

    up
    1
    pieterc dot depraetere at ugent dot be
    14 years ago
    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;
    }
    ?>
    up
    1
    squenz at titania dot bottoms-dream dot de
    18 years ago
    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;
    }
    ?>
    up
    0
    popy-dev
    6 years ago
    Also note that there are few date converters handling French calendar outside the jdtofrench covered range.
    up
    -3
    serged at noos dot fr
    21 years ago
    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 fran?ais :
    Ces routines ne converitssent les dates que de l'an 1 ? 14 (du 22 septembre 1792 au 22 septembre 1806). Cela couvre plus que la p?riode pendant laquelle le calendrier ? ?t? utilis?.
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