Table with MultiCells

<?php
require('fpdf.php');

class PDF_MC_Table extends FPDF
{
    protected $widths;
    protected $aligns;

    function SetWidths($w)
    {
        // Set the array of column widths
        $this->widths = $w;
    }

    function SetAligns($a)
    {
        // Set the array of column alignments
        $this->aligns = $a;
    }

    function Row($data)
    {
        // Calculate the height of the row
        $nb = 0;
        for($i=0;$i<count($data);$i++)
            $nb = max($nb,$this->NbLines($this->widths[$i],$data[$i]));
        $h = 5*$nb;
        // Issue a page break first if needed
        $this->CheckPageBreak($h);
        // Draw the cells of the row
        for($i=0;$i<count($data);$i++)
        {
            $w = $this->widths[$i];
            $a = isset($this->aligns[$i]) ? $this->aligns[$i] : 'L';
            // Save the current position
            $x = $this->GetX();
            $y = $this->GetY();
            // Draw the border
            $this->Rect($x,$y,$w,$h);
            // Print the text
            $this->MultiCell($w,5,$data[$i],0,$a);
            // Put the position to the right of the cell
            $this->SetXY($x+$w,$y);
        }
        // Go to the next line
        $this->Ln($h);
    }

    function CheckPageBreak($h)
    {
        // If the height h would cause an overflow, add a new page immediately
        if($this->GetY()+$h>$this->PageBreakTrigger)
            $this->AddPage($this->CurOrientation);
    }

    function NbLines($w, $txt)
    {
        // Compute the number of lines a MultiCell of width w will take
        if(!isset($this->CurrentFont))
            $this->Error('No font has been set');
        $cw = $this->CurrentFont['cw'];
        if($w==0)
            $w = $this->w-$this->rMargin-$this->x;
        $wmax = ($w-2*$this->cMargin)*1000/$this->FontSize;
        $s = str_replace("\r",'',(string)$txt);
        $nb = strlen($s);
        if($nb>0 && $s[$nb-1]=="\n")
            $nb--;
        $sep = -1;
        $i = 0;
        $j = 0;
        $l = 0;
        $nl = 1;
        while($i<$nb)
        {
            $c = $s[$i];
            if($c=="\n")
            {
                $i++;
                $sep = -1;
                $j = $i;
                $l = 0;
                $nl++;
                continue;
            }
            if($c==' ')
                $sep = $i;
            $l += $cw[$c];
            if($l>$wmax)
            {
                if($sep==-1)
                {
                    if($i==$j)
                        $i++;
                }
                else
                    $i = $sep+1;
                $sep = -1;
                $j = $i;
                $l = 0;
                $nl++;
            }
            else
                $i++;
        }
        return $nl;
    }
}
?>

<?php
require('mc_table.php');

function GenerateWord()
{
    // Get a random word
    $nb = rand(3, 10);
    $w = '';
    for($i=1;$i<=$nb;$i++)
        $w .= chr(rand(ord('a'), ord('z')));
    return $w;
}

function GenerateSentence()
{
    // Get a random sentence
    $nb = rand(1, 10);
    $s = '';
    for($i=1;$i<=$nb;$i++)
        $s .= GenerateWord().' ';
    return substr($s, 0, -1);
}

$pdf = new PDF_MC_Table();
$pdf->AddPage();
$pdf->SetFont('Arial', '', 14);
// Table with 20 rows and 4 columns
$pdf->SetWidths(array(30, 50, 30, 40));
for($i=0;$i<20;$i++)
    $pdf->Row(array(GenerateSentence(), GenerateSentence(), GenerateSentence(), GenerateSentence()));
$pdf->Output();
?>