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HTML conversion

Informations

Description

support for bold, italics, underlined text

support for headlines <h1>, <h2>, <h3> and <h4>

support for images

basic support for tables

full support for lists <li>

full support for <blockquote>

support for pseudo-tags <red> and <blue>

<pre> will be displayed using Courier font, other text with Times

support for <br>, <br /> and <p>

support for <hr> and <hr />

exported PDF filename is created from the article title

temporary files are deleted after 60 minutes

document header is created with article title, URL, author, and publishing date

document footer is created with current and total page numbers

built-in support for iconv (character conversions)

here

Source


<?php
/***************************/ 
/* Radek HULAN             */
/* http://hulan.info/blog/ */
/***************************/ 

define('FPDF_FONTPATH', 'font/');
require('fpdf.php');

/************************************/
/* global functions                 */
/************************************/
function hex2dec($color = "#000000"){
    $tbl_color = array();
    $tbl_color['R']=hexdec(substr($color, 1, 2));
    $tbl_color['G']=hexdec(substr($color, 3, 2));
    $tbl_color['B']=hexdec(substr($color, 5, 2));
    return $tbl_color;
}

function px2mm($px){
    return $px*25.4/72;
}

function txtentities($html){
    $trans = get_html_translation_table(HTML_ENTITIES);
    $trans = array_flip($trans);
    return strtr($html, $trans);
}


/************************************/
/* main class createPDF             */
/************************************/
class createPDF {

    function createPDF($_html, $_title, $_articleurl, $_author, $_date) {
        // main vars
        $this->html=$_html;               // html text to _convert to PDF
        $this->title=$_title;             // article title
        $this->articleurl=$_articleurl;   // article URL
        $this->author=$_author;           // article author
        $this->date=$_date;               // date being published
        // other options
        $this->directory='./';            // directory for temp files
        $this->http='';                   // http path
        $this->delete=60;                 // keep temp files for 60 minutes
        $this->from='iso-8859-2';         // input encoding
        $this->to='cp1250';               // output encoding
        $this->useiconv=false;            // use iconv
        $this->bi=true;                   // support bold and italic tags
    }

    function _convert($s) {
        if ($this->useiconv) 
            return iconv($this->from, $this->to, $s); 
        else 
            return $s;
    }

    function _iso2ascii($s) {
        $iso="áèïéìíåµòóø¹»úùý¾äëöüÁÈÏÉÌÍÅ¥ÒÓØ©«ÚÙÝ®ÄËÖÜ";
        $asc="acdeeillnorstuuyzaeouACDEEILLNORSTUUYZAEOU";
        return strtr($s, $iso, $asc);
    }

    function _makeFileName($title) {
        $title = $this->_iso2ascii(strip_tags(trim($title)));
        preg_match_all('/[a-zA-Z0-9]+/', $title, $nt);
        return implode('-', $nt[0]);
    }

    function run() {
        // change some win codes, and xhtml into html
        $str=array(
        '<br />' => '
', 
        '<hr />' => '<hr>', 
        '[r]' => '<red>', 
        '[/r]' => '</red>', 
        '[l]' => '<blue>', 
        '[/l]' => '</blue>', 
        '&#8220;' => '"', 
        '&#8221;' => '"', 
        '&#8222;' => '"', 
        '&#8230;' => '...', 
        '&#8217;' => '\''
        );
        foreach ($str as $_from => $_to) $this->html = str_replace($_from, $_to, $this->html);

        $pdf=new PDF('P', 'mm', 'A4', $this->title, $this->articleurl, false);
        $pdf->Open();
        $pdf->SetCompression(true);
        $pdf->SetCreator("Script by Radek HULAN, http://hulan.info/blog/");
        $pdf->SetDisplayMode('real');
        $pdf->SetTitle($this->_convert($this->title));
        $pdf->SetAuthor($this->author);
        $pdf->AddPage();

        // face
        $pdf->PutMainTitle($this->_convert($this->title));
        $pdf->PutMinorHeading('Article URL');
        $pdf->PutMinorTitle($this->articleurl, $this->articleurl);
        $pdf->PutMinorHeading('Author');
        $pdf->PutMinorTitle($this->_convert($this->author));
        $pdf->PutMinorHeading("Published: ".date("F j, Y, g:i a", $this->date));
        $pdf->PutLine();
        $pdf->Ln(10);

        // html
        $pdf->WriteHTML($this->_convert(stripslashes($this->html)), $this->bi);

        // save and redirect
        $filename=$this->directory.$this->_makeFileName($this->title).'.pdf';
        $http=$this->http.$this->_makeFileName($this->title).'.pdf';
        $pdf->Output($filename);
        header("Location: $http");

        // cleanup
        $files=opendir($this->directory);
        while ( false !== ($filename = readdir($files))) {
            if (!(strpos($filename, '.pdf')===false)){
                // delete old temp files
                $time=filectime($this->directory.$filename);
                if (!($time===false) && $time>0) if ($time+$this->delete*60<time())
                    unlink($this->directory.$filename);
            }
        }
        // stop processing
        exit;
    }
} 

/************************************/
/* class PDF                        */
/************************************/
class PDF extends FPDF
{
    var $B;
    var $I;
    var $U;
    var $HREF;
    var $fontList;
    var $issetfont;
    var $issetcolor;

    function PDF($orientation='P', $unit='mm', $format='A4', $_title, $_url, $_debug=false)
    {
        $this->FPDF($orientation, $unit, $format);
        $this->B=0;
        $this->I=0;
        $this->U=0;
        $this->HREF='';
        $this->PRE=false;
        $this->SetFont('Times', '', 12);
        $this->fontlist=array("Times", "Courier");
        $this->issetfont=false;
        $this->issetcolor=false;
        $this->articletitle=$_title;
        $this->articleurl=$_url;
        $this->debug=$_debug;
        $this->AliasNbPages();
    }

    function WriteHTML($html, $bi)
    {
        //remove all unsupported tags
        $this->bi=$bi;
        if ($bi)
            $html=strip_tags($html, "<a><img><p>
<font><tr><blockquote><h1><h2><h3><h4><pre><red><blue><ul><li><hr><b><i><u><strong><em>"); 
        else
            $html=strip_tags($html, "<a><img><p>
<font><tr><blockquote><h1><h2><h3><h4><pre><red><blue><ul><li><hr>"); 
        $html=str_replace("\n", ' ', $html); //replace carriage returns by spaces
        // debug
        if ($this->debug) { echo $html; exit; }

        $html = str_replace('&trade;', '™', $html);
        $html = str_replace('&copy;', '©', $html);
        $html = str_replace('&euro;', '€', $html);

        $a=preg_split('/<(.*)>/U', $html, -1, PREG_SPLIT_DELIM_CAPTURE);
        $skip=false;
        foreach($a as $i=>$e)
        {
            if (!$skip) {
                if($this->HREF)
                    $e=str_replace("\n", "", str_replace("\r", "", $e));
                if($i%2==0)
                {
                    // new line
                    if($this->PRE)
                        $e=str_replace("\r", "\n", $e);
                    else
                        $e=str_replace("\r", "", $e);
                    //Text
                    if($this->HREF) {
                        $this->PutLink($this->HREF, $e);
                        $skip=true;
                    } else 
                        $this->Write(5, stripslashes(txtentities($e)));
                } else {
                    //Tag
                    if (substr(trim($e), 0, 1)=='/')
                        $this->CloseTag(strtoupper(substr($e, strpos($e, '/'))));
                    else {
                        //Extract attributes
                        $a2=explode(' ', $e);
                        $tag=strtoupper(array_shift($a2));
                        $attr=array();
                        foreach($a2 as $v) if(ereg('^([^=]*)=["\']?([^"\']*)["\']?$', $v, $a3)) {
                            $attr[strtoupper($a3[1])]=$a3[2];
                        }
                        $this->OpenTag($tag, $attr);
                    }
                }
            } else {
                $this->HREF='';
                $skip=false;
            }
        }
    }

    function OpenTag($tag, $attr)
    {
        //Opening tag
        switch($tag){
            case 'STRONG':
            case 'B':
                if ($this->bi)
                    $this->SetStyle('B', true);
                else
                    $this->SetStyle('U', true);
                break;
            case 'H1':
                $this->Ln(5);
                $this->SetTextColor(150, 0, 0);
                $this->SetFontSize(22);
                break;
            case 'H2':
                $this->Ln(5);
                $this->SetFontSize(18);
                $this->SetStyle('U', true);
                break;
            case 'H3':
                $this->Ln(5);
                $this->SetFontSize(16);
                $this->SetStyle('U', true);
                break;
            case 'H4':
                $this->Ln(5);
                $this->SetTextColor(102, 0, 0);
                $this->SetFontSize(14);
                if ($this->bi)
                    $this->SetStyle('B', true);
                break;
            case 'PRE':
                $this->SetFont('Courier', '', 11);
                $this->SetFontSize(11);
                $this->SetStyle('B', false);
                $this->SetStyle('I', false);
                $this->PRE=true;
                break;
            case 'RED':
                $this->SetTextColor(255, 0, 0);
                break;
            case 'BLOCKQUOTE':
                $this->mySetTextColor(100, 0, 45);
                $this->Ln(3);
                break;
            case 'BLUE':
                $this->SetTextColor(0, 0, 255);
                break;
            case 'I':
            case 'EM':
                if ($this->bi)
                    $this->SetStyle('I', true);
                break;
            case 'U':
                $this->SetStyle('U', true);
                break;
            case 'A':
                $this->HREF=$attr['HREF'];
                break;
            case 'IMG':
                if(isset($attr['SRC']) and (isset($attr['WIDTH']) or isset($attr['HEIGHT']))) {
                    if(!isset($attr['WIDTH']))
                        $attr['WIDTH'] = 0;
                    if(!isset($attr['HEIGHT']))
                        $attr['HEIGHT'] = 0;
                    $this->Image($attr['SRC'], $this->GetX(), $this->GetY(), px2mm($attr['WIDTH']), px2mm($attr['HEIGHT']));
                    $this->Ln(3);
                }
                break;
            case 'LI':
                $this->Ln(2);
                $this->SetTextColor(190, 0, 0);
                $this->Write(5, '     » ');
                $this->mySetTextColor(-1);
                break;
            case 'TR':
                $this->Ln(7);
                $this->PutLine();
                break;
            case 'BR':
                $this->Ln(2);
                break;
            case 'P':
                $this->Ln(5);
                break;
            case 'HR':
                $this->PutLine();
                break;
            case 'FONT':
                if (isset($attr['COLOR']) and $attr['COLOR']!='') {
                    $coul=hex2dec($attr['COLOR']);
                    $this->mySetTextColor($coul['R'], $coul['G'], $coul['B']);
                    $this->issetcolor=true;
                }
                if (isset($attr['FACE']) and in_array(strtolower($attr['FACE']), $this->fontlist)) {
                    $this->SetFont(strtolower($attr['FACE']));
                    $this->issetfont=true;
                }
                break;
        }
    }

    function CloseTag($tag)
    {
        //Closing tag
        if ($tag='H1' || $tag='H2' || $tag='H3' || $tag='H4'){
            $this->Ln(6);
            $this->SetFont('Times', '', 12);
            $this->SetFontSize(12);
            $this->SetStyle('U', false);
            $this->SetStyle('B', false);
            $this->mySetTextColor(-1);
        }
        if ($tag='PRE'){
            $this->SetFont('Times', '', 12);
            $this->SetFontSize(12);
            $this->PRE=false;
        }
        if ($tag='RED' || $tag='BLUE')
            $this->mySetTextColor(-1);
        if ($tag='BLOCKQUOTE'){
            $this->mySetTextColor(0, 0, 0);
            $this->Ln(3);
        }
        if($tag=='STRONG')
            $tag='B';
        if($tag=='EM')
            $tag='I';
        if((!$this->bi) && $tag=='B')
            $tag='U';
        if($tag=='B' or $tag=='I' or $tag=='U')
            $this->SetStyle($tag, false);
        if($tag=='A')
            $this->HREF='';
        if($tag=='FONT'){
            if ($this->issetcolor==true) {
                $this->SetTextColor(0, 0, 0);
            }
            if ($this->issetfont) {
                $this->SetFont('Times', '', 12);
                $this->issetfont=false;
            }
        }
    }

    function Footer()
    {
        //Go to 1.5 cm from bottom
        $this->SetY(-15);
        //Select Arial italic 8
        $this->SetFont('Times', '', 8);
        //Print centered page number
        $this->SetTextColor(0, 0, 0);
        $this->Cell(0, 4, 'Page '.$this->PageNo().'/{nb}', 0, 1, 'C');
        $this->SetTextColor(0, 0, 180);
        $this->Cell(0, 4, 'Created by HTML2PDF / FPDF', 0, 0, 'C', 0, 'http://hulan.info/blog/');
        $this->mySetTextColor(-1);
    }

    function Header()
    {
        //Select Arial bold 15
        $this->SetTextColor(0, 0, 0);
        $this->SetFont('Times', '', 10);
        $this->Cell(0, 10, $this->articletitle, 0, 0, 'C');
        $this->Ln(4);
        $this->Cell(0, 10, $this->articleurl, 0, 0, 'C');
        $this->Ln(7);
        $this->Line($this->GetX(), $this->GetY(), $this->GetX()+187, $this->GetY());
        //Line break
        $this->Ln(12);
        $this->SetFont('Times', '', 12);
        $this->mySetTextColor(-1);
    }

    function SetStyle($tag, $enable)
    {
        $this->$tag+=($enable ? 1 : -1);
        $style='';
        foreach(array('B', 'I', 'U') as $s)
            if($this->$s>0)
                $style.=$s;
        $this->SetFont('', $style);
    }

    function PutLink($URL, $txt)
    {
        //Put a hyperlink
        $this->SetTextColor(0, 0, 255);
        $this->SetStyle('U', true);
        $this->Write(5, $txt, $URL);
        $this->SetStyle('U', false);
        $this->mySetTextColor(-1);
    }

    function PutLine()
    {
        $this->Ln(2);
        $this->Line($this->GetX(), $this->GetY(), $this->GetX()+187, $this->GetY());
        $this->Ln(3);
    }

    function mySetTextColor($r, $g=0, $b=0){
        static $_r=0, $_g=0, $_b=0;

        if ($r==-1) 
            $this->SetTextColor($_r, $_g, $_b);
        else {
            $this->SetTextColor($r, $g, $b);
            $_r=$r;
            $_g=$g;
            $_b=$b;
        }
    }

    function PutMainTitle($title) {
        if (strlen($title)>55)
            $title=substr($title, 0, 55)."...";
        $this->SetTextColor(33, 32, 95);
        $this->SetFontSize(20);
        $this->SetFillColor(255, 204, 120);
        $this->Cell(0, 20, $title, 1, 1, "C", 1);
        $this->SetFillColor(255, 255, 255);
        $this->SetFontSize(12);
        $this->Ln(5);
    }

    function PutMinorHeading($title) {
        $this->SetFontSize(12);
        $this->Cell(0, 5, $title, 0, 1, "C");
        $this->SetFontSize(12);
    }

    function PutMinorTitle($title, $url='') {
        $title=str_replace('http://', '', $title);
        if (strlen($title)>70)
            if (!(strrpos($title, '/')==false))
                $title=substr($title, strrpos($title, '/')+1);
        $title=substr($title, 0, 70);
        $this->SetFontSize(16);
        if ($url!='') {
            $this->SetStyle('U', false);
            $this->SetTextColor(0, 0, 180);
            $this->Cell(0, 6, $title, 0, 1, "C", 0, $url);
            $this->SetTextColor(0, 0, 0);
            $this->SetStyle('U', false);
        } else
            $this->Cell(0, 6, $title, 0, 1, "C", 0);
        $this->SetFontSize(12);
        $this->Ln(4);
    }
} // class PDF

?>

Example


<?php
/***************************/ 
/* Radek HULAN             */
/* http://hulan.info/blog/ */
/***************************/ 

require('html2pdf.php');

if(isset($_POST['html']))
{
    $pdf =& new createPDF(
        $_POST['html'],    // html text to publish
        $_POST['title'],   // article title
        $_POST['url'],     // article URL
        $_POST['author'], // author name
        time()
    );
    $pdf->run();
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>HTML2PDF</title>
<style type='text/css'>
  fieldset{padding:10px}
  body{font-size:small}
</style>
</head><body>
<h1>HTML2PDF</h1>
  <form name="pdfgen" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
  <div>
    <fieldset><legend>HTML2PDF</legend>
    <p>Title: <input type="text" maxlength="30" name="title"></p>
    <p>URL: <input type="text" maxlength="30" name="url"></p>
    <p>Author: <input type="text" maxlength="30" name="author"></p>
    <p><textarea name="html" cols="50" rows="15"></textarea></p>
    <p><input type="submit" value="Generate PDF"></p>
    </fieldset>
  </div>
  </form>
</body></html>