<?php
require_once("fpdf.php");

class PDF_USA_Calendar extends FPDF
{
protected $date;
protected $squareHeight;
protected $squareWidth;
protected $longestMonth;
protected $tinySquareSize;
protected $headerFontSize;

function __construct($orientation="L", $size="Letter")
{
    parent::__construct($orientation, "mm", $size);
    // compute longest month name
    $this->longestMonth = "";
    for ($month = 1; $month <= 12; ++$month)
        {
        $monthYear = gmdate("F Y", jdtounix($this->MDYtoJD($month, 1, 2009)));
        if (strlen($monthYear) > strlen($this->longestMonth))
            {
            $this->longestMonth = $monthYear;
            }
        }
    // compute font size
    $this->tinySquareSize = 4;
    $this->headerFontSize = 70;
    $this->SetFont("Times", "B", $this->headerFontSize);
    $width = $this->w - $this->lMargin - $this->rMargin;
    while ($this->GetStringWidth($this->longestMonth) > $width - $this->tinySquareSize * 22)
        {
        --$this->headerFontSize;
        $this->SetFont("Times", "B", $this->headerFontSize);
        }
}

// useful date manipulation routines

function JDtoYMD($date, &$year, &$month, &$day)
{
    $string = JDToGregorian($date);
    $month = strtok($string, " -/");
    $day = strtok(" -/");
    $year = strtok(" -/");
}

function MDYtoJD($month, $day, $year)
{
    if (! $month || ! $day || ! $year)
        return 0;
    $a = floor((14-$month)/12);
    $y = floor($year+4800-$a);
    $m = floor($month+12*$a-3);
    $jd = $day+floor((153*$m+2)/5)+$y*365;
    $jd += floor($y/4)-floor($y/100)+floor($y/400)-32045;
    return $jd;
}

function lastMonth($date)
{
    $this->JDtoYMD($date, $year, $month, $day);
    if (--$month == 0)
        {
        $month = 12;
        $year--;
        }
    return GregorianToJD($month, $day, $year);
}

function nextMonth($date)
{
    $this->JDtoYMD($date, $year, $month, $day);
    if (++$month > 12)
        {
        $month = 1;
        ++$year;
        }
    return GregorianToJD($month, $day, $year);
}

function isHoliday($date)
{
    $this->JDtoYMD($date, $year, $month, $day);
    if ($month == 7 && $day == 4)
        return "Independence Day";
    if ($month == 1 && $day == 1)
        return "New Year's Day";
    if ($month == 12 && $day == 25)
        return "Christmas";
    if ($month == 11)
        {
        $dow = gmdate("w", jdtounix($date));
        if ($day == 11 && $dow > 0 && $dow < 6) // does the eleventh fall on a weekday?
            return "Veteran's Day";
        if ($dow == 1 && ($day == 12 || $day == 13))
            return "Veteran's Day";
        }
    if ($this->isWeekHoliday($date, 4, 4, 11)) // thursday of the fourth week of November
        return "Thanksgiving";
    if ($this->isWeekHoliday($date, 1, 3, 1))
        return "MLK, Jr. Day";
    if ($this->isWeekHoliday($date, 1, 3, 2))
        return "President's Day";
    if ($this->isWeekHoliday($date, 2, 1, 11))
        return "Election Day";
    if ($this->isWeekHoliday($date, 1, 1, 9))
        return "Labor Day";
    if ($this->isWeekHoliday($date, 1, 2, 10))
        return "Columbus Day";
    if ($this->isWeekHoliday($date, 1, 99, 5))
        return "Memorial Day";
    if ($this->isWeekHoliday($date, 0, 2, 5))
        return "Mother's Day";
    if ($this->isWeekHoliday($date, 0, 3, 6))
        return "Father's Day";
    return "";
}

function isWeekHoliday($date, $dayOfWeek, $weekOfMonth, $monthOfDate)
{
    $this->JDtoYMD($date, $year, $month, $day);
    if ($monthOfDate != $month)
        return 0;
    $jd = jdtounix($date);
    $dow = gmdate("w", $jd);
    if ($dow != $dayOfWeek)
    return 0;
    $daysInMonth = gmdate("t", $jd);
    if ($weekOfMonth > 5 && $day + 6 > $daysInMonth)
        return 1;
     if ($day > ($weekOfMonth - 1) * 7 && $day <= ($weekOfMonth * 7))
        return 1;
    return 0;
}

function tinyCalendar($date, $square)
{
    $this->JDtoYMD($date, $year, $month, $day);
    // print numbers in boxes
    $wd=gmdate("w", jdtounix($date));
    $cur = $date - $wd;
    $this->SetFont("Helvetica", "B", 10);
    $monthStr = gmdate ("F", jdtounix($date))." $year";
    $this->JDtoYMD($date, $year, $month, $day);
    // save local copy of coordinates for future reference
    $x = $this->x;
    $y = $this->y;
    $this->Cell(7*$square, $square, $monthStr, 0, 0, "C");
    $y+=$square;
    $this->SetXY($x, $y);
    $this->SetFontSize(8);
    for ($i = 1; $i <= 7; ++$i)
        {
        $day = strtoupper(gmdate("l", jdtounix($this->MDYtoJD(2, $i, 2009))));
        $this->Cell($square, $square, $day[0], 0, 0, "C");
        }
    $y+=$square;
    $this->SetXY($x, $y);
    for ($k=0;$k<6;$k++)
        {
        for ($i=0;$i<7;$i++ )
            {
            $this->JDtoYMD($cur++, $curYear, $curMonth, $curDay);
            if ($curMonth != $month)
                $curDay = " ";
            $this->Cell($square, $square, $curDay, 0, 0, "R");
            }
        $y+=$square;
        $this->SetXY($x, $y);
        }
}

function printDay($date)
{
// nothing to do, can be overriden
}

function printHoliday($date)
{
    $x = $this->x;
    $y = $this->y;
    $height = 5.5;
    if ($this->squareHeight < 50)
        $height = 4;
    $widthPercent = .92;
    $fontSize = 11;
    $holiday = $this->isHoliday($date);
    if (strlen($holiday))
        {
        $wd = gmdate("w", jdtounix($date));
        if ($wd != 0 && $wd != 6)
            $this->Cell($this->squareWidth, $this->squareHeight, "", 0, 0, "", true);
        $this->SetXY($x + $this->squareWidth * (1-$widthPercent)/2, $y + $this->squareHeight * 0.83);
        $this->SetFont("Helvetica", "B", $fontSize);
        $this->Cell($this->squareWidth * $widthPercent, $height, $holiday, 0, 0, "C");
        }
}

function printMonth($date)
{
    $this->date = $date;
    $this->JDtoYMD($date, $year, $month, $day);
    $this->AddPage();
    // compute size base on current settings
    $width = $this->w - $this->lMargin - $this->rMargin;
    $height = $this->h - $this->tMargin - $this->bMargin;
    // print prev and next calendars
    $this->setXY($this->lMargin, $this->tMargin);
    $this->tinyCalendar($this->lastMonth($date), $this->tinySquareSize);
    $this->setXY($this->lMargin+$width - $this->tinySquareSize * 7, $this->tMargin);
    $this->tinyCalendar($this->nextMonth($date), $this->tinySquareSize);
    // print header
    $firstLine = $this->tinySquareSize * 8 + $this->tMargin;
    $monthStr = strtoupper(gmdate ("F Y", jdtounix($date)));
    $this->SetXY($this->lMargin, $this->tMargin);
    $this->SetFont("Times", "B", $this->headerFontSize);
    $this->Cell($width, $firstLine, $monthStr, 0, 0, "C");
    // compute number of weeks in month.
    $wd=gmdate("w", jdtounix($date));
    $start = $date - $wd;
    $numDays = $this->nextMonth($date) - $start;
    $numWeeks = 0;
    while ($numDays > 0)
        {
        $numDays -= 7;
        ++$numWeeks;
        }
    // compute horizontal lines
    $this->squareHeight = ($height - 6 - $firstLine) / $numWeeks;
    $horizontalLines = array($firstLine, 6);
    for ($i = 0; $i < $numWeeks; ++$i)
        {
        $horizontalLines[$i + 2] = $this->squareHeight;
        }
    // compute vertical lines
    $this->squareWidth = $width / 7;
    $verticalLines = array($this->lMargin, $this->squareWidth, $this->squareWidth, $this->squareWidth, $this->squareWidth, $this->squareWidth, $this->squareWidth, $this->squareWidth);
    
    // print days of week
    $x = 0;
    $this->SetFont("Times", "B", 12);
    for ($i = 1; $i <= 7; ++$i)
        {
        $x += $verticalLines[$i-1];
        $this->SetXY($x, $firstLine);
        $day = gmdate("l", jdtounix($this->MDYtoJD(2, $i, 2009)));
        $this->Cell($verticalLines[$i], 6, $day, 0, 0, "C");
        }
    
    // print numbers in boxes
    $wd=gmdate("w", jdtounix($date));
    $cur = $date - $wd;
    $this->SetFont("Times", "B", 20);
    $x = 0;
    $y = $horizontalLines[0];
    for ($k=0;$k<$numWeeks;$k++)
        {
        $y += $horizontalLines[$k+1];
        for ($i=0;$i<7;$i++ )
            {
            $this->JDtoYMD($cur, $curYear, $curMonth, $curDay);
            $x += $verticalLines[$i];
            $this->squareWidth = $verticalLines[$i+1];
            if ($curMonth == $month)
                {
                $this->setXY($x, $y);
                $this->printHoliday($cur);
                $this->setXY($x, $y);
                $this->printDay($cur);
                $this->SetFont("Times", "B", 20);
                $this->SetXY($x, $y+1);
                $this->Cell(5, 5, $curDay);
                }
            ++$cur;
            }
        $x = 0;
        }
    
    // print horizontal lines
    $ly = 0;
    $ry = 0;
    foreach ($horizontalLines as $key => $value)
        {
        $ly += $value;
        $ry += $value;
        $this->Line($this->lMargin, $ly, $this->lMargin+$width, $ry);
        }
    // print vertical lines
    $lx = 0;
    $rx = 0;
    foreach ($verticalLines as $key => $value)
        {
        $lx += $value;
        $rx += $value;
        $this->Line($lx, $firstLine, $rx, $firstLine + 6 + $this->squareHeight * $numWeeks);
        }
}

} // PDF_USA_Calendar class definition
?>

<?php
require("pdfUSACalendar.php");

class MyCalendar extends PDF_USA_Calendar
{

function printDay($date)
{
    // add logic here to customize a day
    $this->JDtoYMD($date, $year, $month, $day);
    if ($month == 1 && $day == 10)
        {
        $this->SetXY($this->x, $this->y + $this->squareHeight / 2);
        $this->SetFont("Arial", "B", 10);
        $this->Cell($this->squareWidth, 5, "Happy Birthday!", 0, 0, "C");
        }
}

function isHoliday($date)
{
    // insert your favorite holidays here
    $this->JDtoYMD($date, $year, $month, $day);
    if ($date == easter_days($year) + $this->MDYtoJD(3, 21, $year))
        {
        $noSchool = false;
        return "Easter";
        }
    if ($date == easter_days($year) + $this->MDYtoJD(3, 21, $year) - 2)
        {
        $noSchool = false;
        return "Good Friday";
        }
    $jewishDate = explode("/", jdtojewish(gregoriantojd($month, $day, $year)));
    $month = $jewishDate[0];
    $day = $jewishDate[1];
    if ($month == 1 && $day == 1)
        return "Rosh Hashanah";
    if ($month == 1 && $day == 2)
        return "Rosh Hashanah";
    if ($month == 1 && $day == 10)
        return "Yom Kippur";
    if ($month == 3 && $day == 25)
        return "Chanukkah";
    if ($month == 8 && $day == 15)
        return "Passover";
    // call the base class for USA holidays
    return parent::isHoliday($date);
}

} // class MyCalendar extends PDF_USA_Calendar

// MyCalendar shows how to customize your calendar with Easter, some select Jewish holidays and a birthday
// Supports any size paper FPDF does
$pdf = new MyCalendar("L", "Letter");
// you can set margins and line width here. PDF_USA_Calendar uses the current settings.
$pdf->SetMargins(7, 7);
$pdf->SetAutoPageBreak(false, 0);
// set fill color for non-weekend holidays
$greyValue = 190;
$pdf->SetFillColor($greyValue, $greyValue, $greyValue);
// print the calendar for a whole year
$year = gmdate("Y");
for ($month = 1; $month <= 12; ++$month)
    {
    $date = $pdf->MDYtoJD($month, 1, $year);
    $pdf->printMonth($date);
    }
$pdf->Output();
?>