HtmlCell FPDF

HtmlCell.php

<?php

require('fpdf.php');

class PDF extends FPDF {
	//variables of html parser
	private $B=0;
	private $I=0;
	private $U=0;
	private $HREF='';
	private $fontList=array('arial', 'times', 'courier', 'helvetica', 'symbol');
	private $issetfont=false;
	private $issetcolor=false;

	public function HtmlCell($html) {
	    //HTML parser
	    $html=strip_tags($html,"<b><u><i><img><p><br><strong><em><font><tr><blockquote>"); //remove unsupported tags
	    $html=str_replace("\n",' ',$html); //replace newline with space
	    $a=preg_split('/<(.*)>/U',$html,-1,PREG_SPLIT_DELIM_CAPTURE); //break chain with tags
	    foreach($a as $i=>$e) {
			if($i%2==0){
				$this->Write(5,htmlspecialchars($e,ENT_QUOTES));
			} else {
				//Tag
				if($e[0]=='/')
					$this->CloseTag(strtoupper(substr($e,1)));
				else
				{
					//Extract attributes
					$a2=explode(' ',$e);
					$tag=strtoupper(array_shift($a2));
					$attr=array();
					foreach($a2 as $v)
					{
						if(preg_match('/([^=]*)=["\']?([^"\']*)/',$v,$a3))
							$attr[strtoupper($a3[1])]=$a3[2];
					}
					$this->OpenTag($tag,$attr);
				}
			}
	    }
	}

	private function OpenTag($tag, $attr) {
	    //Opening tag
	    switch($tag){
			case 'B':
			case 'I':
			case 'U':
				$this->SetStyle($tag,true);
				break;
			case 'IMG':
				if(isset($attr['SRC']) && (isset($attr['WIDTH']) || 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(), $this->px2mm($attr['WIDTH']), $this->px2mm($attr['HEIGHT']));
				}
				break;
			case 'BLOCKQUOTE':
			case 'BR':
				$this->Ln(5);
				break;
			case 'P':
				$this->Ln(10);
				break;
			case 'FONT':
				if (!empty($attr['COLOR'])) {
					$this->SetTextColor($attr['COLOR']);
					$this->issetcolor=true;
				}
				break;
	    }
	}
	
	private function px2mm($px, $dpi=72){
		return $px*25.4/$dpi;
	}

	public function SetTextColor($r, $g=null, $b=null) {
		$color = $r;
		if(strpos($color, '#')) {
		    $r = hexdec(substr($color, 1, 2));
		    $g = hexdec(substr($color, 3, 2));
		    $b = hexdec(substr($color, 5, 2));
		}
		parent::SetTextColor($r,$g,$b);
	}

	private function CloseTag($tag)
	{
	    if($tag=='B' || $tag=='I' || $tag=='U')
			$this->SetStyle($tag,false);
	    if($tag=='FONT' && $this->issetcolor)
		    $this->SetTextColor(0);
	}

	private 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);
	}
}