Add-On Small caps

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

class PDF_SmallCaps extends FPDF
{

/**
* Create the Small Caps effect in a Cell
* @author constantin teleman
*/
function CellSmallCaps($w, $h=0, $txt='', $border=0, $ln=0, $align='', $fill=false, $link='')
{
    //Output a cell
    $txt=(string)$txt;
    $k=$this->k;
    if($this->y+$h>$this->PageBreakTrigger && !$this->InHeader && !$this->InFooter && $this->AcceptPageBreak())
    {
        //Automatic page break
        $x=$this->x;
        $ws=$this->ws;
        if($ws>0)
        {
            $this->ws=0;
            $this->_out('0 Tw');
        }
        $this->AddPage($this->CurOrientation, $this->CurPageSize);
        $this->x=$x;
        if($ws>0)
        {
            $this->ws=$ws;
            $this->_out(sprintf('%.3F Tw', $ws*$k));
        }
    }
    if($w==0)
        $w=$this->w-$this->rMargin-$this->x;
    $s='';
    if($fill || $border==1)
    {
        if($fill)
            $op=($border==1) ? 'B' : 'f';
        else
            $op='S';
        $s=sprintf('%.2F %.2F %.2F %.2F re %s ', $this->x*$k, ($this->h-$this->y)*$k, $w*$k, -$h*$k, $op);
    }
    if(is_string($border))
    {
        $x=$this->x;
        $y=$this->y;
        if(strpos($border, 'L')!==false)
            $s.=sprintf('%.2F %.2F m %.2F %.2F l S ', $x*$k, ($this->h-$y)*$k, $x*$k, ($this->h-($y+$h))*$k);
        if(strpos($border, 'T')!==false)
            $s.=sprintf('%.2F %.2F m %.2F %.2F l S ', $x*$k, ($this->h-$y)*$k, ($x+$w)*$k, ($this->h-$y)*$k);
        if(strpos($border, 'R')!==false)
            $s.=sprintf('%.2F %.2F m %.2F %.2F l S ', ($x+$w)*$k, ($this->h-$y)*$k, ($x+$w)*$k, ($this->h-($y+$h))*$k);
        if(strpos($border, 'B')!==false)
            $s.=sprintf('%.2F %.2F m %.2F %.2F l S ', $x*$k, ($this->h-($y+$h))*$k, ($x+$w)*$k, ($this->h-($y+$h))*$k);
    }
    if($txt!=='')
    {
        if(!isset($this->CurrentFont))
            $this->Error('No font has been set');
        if($align=='R')
            $dx=$w-$this->cMargin-$this->GetStringWidth($txt);
        elseif($align=='C')
            $dx=($w-$this->GetStringWidth($txt))/2;
        else
            $dx=$this->cMargin;
        if($this->ColorFlag)
            $s.='q '.$this->TextColor.' ';
        $txt2=str_replace(')', '\\)', str_replace('(', '\\(', str_replace('\\', '\\\\', $txt)));

        $firstDx = $dx;
        for ($i=0; $i<strlen($txt2); $i++) {
            $letter = $txt2[$i];
            $upper = strpos("ABCDEFGHIJKLMNOPQRSTUVWXZ0123456789`!@#$%^&*()_=+|'\";:{}[]?, .<>", $letter);
            if ($upper === false) { // the letter is lowercase
                if($i==0){ // for the first char
                    $s.=sprintf(' BT /F%d %.2F Tf', $this->CurrentFont['i'], $this->FontSizePt*0.8);
                    $s.=sprintf(' %.2F %.2F Td (%s) Tj', ($this->x+$dx)*$k, ($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k, strtoupper($letter));
                    $s.=sprintf(' /F%d %.2F Tf ET', $this->CurrentFont['i'], $this->FontSizePt);
                } else {  // if there is no first char
                    $s.=sprintf(' BT /F%d %.2F Tf', $this->CurrentFont['i'], $this->FontSizePt*0.8);
                    $dx+=($this->GetStringWidth(substr($txt2, $i-1, 1)))*1.02;
                    $s.=sprintf(' %.2F %.2F Td (%s) Tj', ($this->x+$dx)*$k, ($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k, strtoupper($letter));
                    $s.=sprintf(' /F%d %.2F Tf ET', $this->CurrentFont['i'], $this->FontSizePt);
                }
            } else { //case the letter is uppercase
                if($i == 0){ //for the first char
                    $s.=sprintf(' BT %.2F %.2F Td (%s) Tj ET', ($this->x+$dx)*$k, ($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k, $letter);
                } else {  // if there is no first char
                    $dx+=($this->GetStringWidth(substr($txt2, $i-1, 1)))*1.02;
                    $s.=sprintf(' BT %.2F %.2F Td (%s) Tj ET', ($this->x+$dx)*$k, ($this->h-($this->y+.5*$h+.3*$this->FontSize))*$k, $letter);
                }
            }
        }
        
        if($this->underline)
            $s.=' '.$this->_dounderline($this->x+$firstDx, $this->y+.5*$h+.3*$this->FontSize, $txt);
        if($this->ColorFlag)
            $s.=' Q';
        if($link)
            $this->Link($this->x+$firstDx, $this->y+.5*$h-.5*$this->FontSize, $this->GetStringWidth($txt), $this->FontSize, $link);
    }
    if($s)
        $this->_out($s);
    $this->lasth=$h;
    if($ln>0)
    {
        //Go to next line
        $this->y+=$h;
        if($ln==1)
            $this->x=$this->lMargin;
    }
    else
        $this->x+=$w;
}

/**
* Create the Small Caps effect in a MultiCell
* @author constantin teleman
*/
function MultiCellSmallCaps($w, $h, $txt, $border=0, $align='', $fill=false)
{
    //Output text with automatic or explicit line breaks
    if(!isset($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--;
    $b=0;
    if($border)
    {
        if($border==1)
        {
            $border='LTRB';
            $b='LRT';
            $b2='LR';
        }
        else
        {
            $b2='';
            if(strpos($border, 'L')!==false)
                $b2.='L';
            if(strpos($border, 'R')!==false)
                $b2.='R';
            $b=(strpos($border, 'T')!==false) ? $b2.'T' : $b2;
        }
    }
    $sep=-1;
    $i=0;
    $j=0;
    $l=0;
    $ns=0;
    $nl=1;
    while($i<$nb)
    {
        //Get next character
        $c=$s[$i];
        if($c=="\n")
        {
            //Explicit line break
            if($this->ws>0)
            {
                $this->ws=0;
                $this->_out('0 Tw');
            }
            $this->CellSmallCaps($w, $h, substr($s, $j, $i-$j), $b, 2, $align, $fill);
            $i++;
            $sep=-1;
            $j=$i;
            $l=0;
            $ns=0;
            $nl++;
            if($border && $nl==2)
                $b=$b2;
            continue;
        }
        if($c==' ')
        {
            $sep=$i;
            $ls=$l;
            $ns++;
        }
        $l+=$cw[$c];
        if($l>$wmax)
        {
            //Automatic line break
            if($sep==-1)
            {
                if($i==$j)
                    $i++;
                if($this->ws>0)
                {
                    $this->ws=0;
                    $this->_out('0 Tw');
                }
                $this->CellSmallCaps($w, $h, substr($s, $j, $i-$j), $b, 2, $align, $fill);
            }
            else
            {
                if($align=='J')
                {
                    $this->ws=($ns>1) ? ($wmax-$ls)/1000*$this->FontSize/($ns-1) : 0;
                    $this->_out(sprintf('%.3F Tw', $this->ws*$this->k));
                }
                $this->CellSmallCaps($w, $h, substr($s, $j, $sep-$j), $b, 2, $align, $fill);
                $i=$sep+1;
            }
            $sep=-1;
            $j=$i;
            $l=0;
            $ns=0;
            $nl++;
            if($border && $nl==2)
                $b=$b2;
        }
        else
            $i++;
    }
    //Last chunk
    if($this->ws>0)
    {
        $this->ws=0;
        $this->_out('0 Tw');
    }
    if($border && strpos($border, 'B')!==false)
        $b.='B';
    $this->CellSmallCaps($w, $h, substr($s, $j, $i-$j), $b, 2, $align, $fill);
    $this->x=$this->lMargin;
}

}

?>

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

$pdf=new PDF_SmallCaps();
$pdf->AddPage();
$pdf->SetFont('Courier', '', 30);
for ($i = 30; $i>4; $i--) {
    $pdf->SetFontSize($i);
    $pdf->CellSmallCaps(180, 8, "The Code and Text Editor", 0, 1);
}
$pdf->SetFontSize(10);
$pdf->MultiCellSmallCaps(180, 6, 'The Code and Text Editor is a word processing utility where you enter, display, and edit code or text.'.
    ' It is referred to as either the Text Editor or the Code Editor, based on its content.'.
    ' If it contains only text without an associated language, it is referred to as the Text Editor.'.
    ' If it contains source code associated with a language, it is referred to as the Code Editor.'.
    ' Because it is most often used for editing code, though, we will refer to it as the Code Editor.');
$pdf->Output();
?>